PORTUGAL -- SPOT EXCHANGE RATE, ESCUDOS/US$ ------------------------------------------- 2-Jan-73 26.9500 3-Jan-73 26.8100 4-Jan-73 26.8100 5-Jan-73 26.8300 8-Jan-73 26.8100 9-Jan-73 26.8300 10-Jan-73 26.8100 11-Jan-73 26.8100 12-Jan-73 26.8100 15-Jan-73 26.8100 16-Jan-73 26.8800 17-Jan-73 26.8800 18-Jan-73 26.8100 19-Jan-73 26.8500 22-Jan-73 26.8100 23-Jan-73 26.8100 24-Jan-73 26.8100 25-Jan-73 26.8100 26-Jan-73 26.8100 29-Jan-73 26.8100 30-Jan-73 26.8100 31-Jan-73 26.7700 1-Feb-73 26.6700 2-Feb-73 26.6000 5-Feb-73 26.6000 6-Feb-73 26.6700 7-Feb-73 26.6700 8-Feb-73 26.6000 9-Feb-73 26.7400 12-Feb-73 ND 13-Feb-73 ND 14-Feb-73 ND 15-Feb-73 25.6400 16-Feb-73 25.5100 19-Feb-73 ND 20-Feb-73 25.5100 21-Feb-73 25.3800 22-Feb-73 25.4500 23-Feb-73 25.1900 26-Feb-73 25.1900 27-Feb-73 25.3800 28-Feb-73 25.3800 1-Mar-73 25.3200 2-Mar-73 ND 5-Mar-73 25.2500 6-Mar-73 24.3900 7-Mar-73 24.0400 8-Mar-73 24.0400 9-Mar-73 24.2700 12-Mar-73 23.2600 13-Mar-73 23.5300 14-Mar-73 23.5300 15-Mar-73 23.4200 16-Mar-73 23.4200 19-Mar-73 23.4200 20-Mar-73 23.5300 21-Mar-73 25.2500 22-Mar-73 25.2500 23-Mar-73 25.1900 26-Mar-73 25.0000 27-Mar-73 25.1300 28-Mar-73 25.1300 29-Mar-73 25.1300 30-Mar-73 25.1900 2-Apr-73 25.1900 3-Apr-73 25.3200 4-Apr-73 25.2500 5-Apr-73 25.3200 6-Apr-73 25.2500 9-Apr-73 25.2800 10-Apr-73 25.2800 11-Apr-73 25.2800 12-Apr-73 25.2500 13-Apr-73 25.2500 16-Apr-73 25.2500 17-Apr-73 25.2500 18-Apr-73 25.2500 19-Apr-73 25.2500 20-Apr-73 25.2500 23-Apr-73 25.2500 24-Apr-73 25.2500 25-Apr-73 25.3200 26-Apr-73 25.3800 27-Apr-73 25.3300 30-Apr-73 25.3200 1-May-73 25.3200 2-May-73 25.3800 3-May-73 25.3500 4-May-73 25.3500 7-May-73 25.3500 8-May-73 25.3800 9-May-73 25.3800 10-May-73 25.3200 11-May-73 25.2800 14-May-73 25.1300 15-May-73 24.8100 16-May-73 24.9400 17-May-73 24.8800 18-May-73 24.8100 21-May-73 24.5700 22-May-73 24.5700 23-May-73 24.5700 24-May-73 24.6300 25-May-73 24.6900 28-May-73 ND 29-May-73 24.8100 30-May-73 24.4500 31-May-73 24.4500 1-Jun-73 24.3000 4-Jun-73 24.3300 5-Jun-73 23.9800 6-Jun-73 23.7500 7-Jun-73 23.6400 8-Jun-73 23.6400 11-Jun-73 23.8100 12-Jun-73 23.8100 13-Jun-73 23.7000 14-Jun-73 23.8100 15-Jun-73 23.8100 18-Jun-73 23.5300 19-Jun-73 23.6400 20-Jun-73 23.7000 21-Jun-73 23.6400 22-Jun-73 23.5300 25-Jun-73 23.4700 26-Jun-73 23.4500 27-Jun-73 23.4200 28-Jun-73 23.3100 29-Jun-73 ND 2-Jul-73 22.9900 3-Jul-73 22.9900 4-Jul-73 ND 5-Jul-73 22.4200 6-Jul-73 22.1700 9-Jul-73 22.1200 10-Jul-73 22.0300 11-Jul-73 23.1500 12-Jul-73 22.7300 13-Jul-73 22.6200 16-Jul-73 22.6200 17-Jul-73 22.3200 18-Jul-73 22.5200 19-Jul-73 22.1200 20-Jul-73 22.3700 23-Jul-73 22.2700 24-Jul-73 22.2200 25-Jul-73 22.3200 26-Jul-73 21.9800 27-Jul-73 22.1200 30-Jul-73 22.1200 31-Jul-73 22.4700 1-Aug-73 22.0800 2-Aug-73 22.6200 3-Aug-73 22.5200 6-Aug-73 22.6200 7-Aug-73 22.7300 8-Aug-73 22.7300 9-Aug-73 22.8300 10-Aug-73 23.0400 13-Aug-73 22.8800 14-Aug-73 23.0400 15-Aug-73 23.3600 16-Aug-73 23.7500 17-Aug-73 23.5300 20-Aug-73 23.4700 21-Aug-73 23.3100 22-Aug-73 23.5300 23-Aug-73 23.3100 24-Aug-73 23.4200 27-Aug-73 23.2600 28-Aug-73 23.5800 29-Aug-73 23.4200 30-Aug-73 23.4700 31-Aug-73 23.5300 3-Sep-73 ND 4-Sep-73 23.4700 5-Sep-73 23.3100 6-Sep-73 23.4200 7-Sep-73 23.3100 10-Sep-73 23.3100 11-Sep-73 23.4700 12-Sep-73 23.4700 13-Sep-73 23.4700 14-Sep-73 23.4700 17-Sep-73 23.4200 18-Sep-73 23.3600 19-Sep-73 23.4200 20-Sep-73 23.0900 21-Sep-73 23.1500 24-Sep-73 23.3100 25-Sep-73 23.4200 26-Sep-73 23.3600 27-Sep-73 23.4200 28-Sep-73 23.4200 1-Oct-73 23.4200 2-Oct-73 23.3600 3-Oct-73 23.4200 4-Oct-73 23.4200 5-Oct-73 23.4200 8-Oct-73 ND 9-Oct-73 23.3100 10-Oct-73 23.3100 11-Oct-73 23.2000 12-Oct-73 23.2000 15-Oct-73 23.2600 16-Oct-73 23.2000 17-Oct-73 23.1500 18-Oct-73 23.0400 19-Oct-73 23.0900 22-Oct-73 ND 23-Oct-73 23.0400 24-Oct-73 23.0400 25-Oct-73 23.0400 26-Oct-73 23.0900 29-Oct-73 23.2600 30-Oct-73 23.5300 31-Oct-73 23.4200 1-Nov-73 23.3100 2-Nov-73 23.3600 5-Nov-73 23.4200 6-Nov-73 ND 7-Nov-73 23.9800 8-Nov-73 23.9800 9-Nov-73 24.0400 12-Nov-73 24.5100 13-Nov-73 24.8100 14-Nov-73 24.6900 15-Nov-73 24.5100 16-Nov-73 24.3900 19-Nov-73 24.1000 20-Nov-73 24.2700 21-Nov-73 23.4700 22-Nov-73 ND 23-Nov-73 24.8800 26-Nov-73 24.9400 27-Nov-73 24.8800 28-Nov-73 24.7500 29-Nov-73 25.0000 30-Nov-73 24.9400 3-Dec-73 25.0000 4-Dec-73 25.0000 5-Dec-73 25.1300 6-Dec-73 25.1300 7-Dec-73 25.1300 10-Dec-73 25.1300 11-Dec-73 25.2500 12-Dec-73 25.1300 13-Dec-73 25.2500 14-Dec-73 25.3200 17-Dec-73 25.3200 18-Dec-73 25.4500 19-Dec-73 25.3800 20-Dec-73 25.4500 21-Dec-73 25.4500 24-Dec-73 ND 25-Dec-73 ND 26-Dec-73 ND 27-Dec-73 25.7100 28-Dec-73 25.7700 31-Dec-73 25.7700 1-Jan-74 ND 2-Jan-74 25.9700 3-Jan-74 26.4600 4-Jan-74 26.3900 7-Jan-74 26.7400 8-Jan-74 27.4000 9-Jan-74 26.6000 10-Jan-74 26.8100 11-Jan-74 25.7700 14-Jan-74 26.7400 15-Jan-74 27.0300 16-Jan-74 27.1700 17-Jan-74 27.0300 18-Jan-74 27.0300 21-Jan-74 28.0100 22-Jan-74 27.3200 23-Jan-74 27.1700 24-Jan-74 27.3200 25-Jan-74 27.1700 28-Jan-74 26.8800 29-Jan-74 27.0300 30-Jan-74 26.8800 31-Jan-74 26.7400 1-Feb-74 26.5300 4-Feb-74 26.3900 5-Feb-74 26.3200 6-Feb-74 26.3900 7-Feb-74 26.3900 8-Feb-74 26.3200 11-Feb-74 26.3200 12-Feb-74 ND 13-Feb-74 26.1800 14-Feb-74 26.1100 15-Feb-74 26.0400 18-Feb-74 ND 19-Feb-74 25.7100 20-Feb-74 25.5800 21-Feb-74 25.6400 22-Feb-74 25.3200 25-Feb-74 25.3800 26-Feb-74 25.4500 27-Feb-74 25.3800 28-Feb-74 25.4500 1-Mar-74 25.7100 4-Mar-74 25.5800 5-Mar-74 25.5800 6-Mar-74 25.5800 7-Mar-74 25.5100 8-Mar-74 25.5100 11-Mar-74 25.4500 12-Mar-74 25.3800 13-Mar-74 25.4500 14-Mar-74 25.5100 15-Mar-74 25.5100 18-Mar-74 25.4500 19-Mar-74 25.5100 20-Mar-74 25.4500 21-Mar-74 25.0000 22-Mar-74 25.0600 25-Mar-74 25.0000 26-Mar-74 24.8800 27-Mar-74 24.8800 28-Mar-74 24.8100 29-Mar-74 24.6900 1-Apr-74 24.8100 2-Apr-74 24.8100 3-Apr-74 25.0000 4-Apr-74 24.9400 5-Apr-74 24.9400 8-Apr-74 25.0000 9-Apr-74 25.1300 10-Apr-74 25.3200 11-Apr-74 25.3200 12-Apr-74 25.3200 15-Apr-74 25.3200 16-Apr-74 25.3200 17-Apr-74 25.1300 18-Apr-74 25.1300 19-Apr-74 24.8800 22-Apr-74 25.0000 23-Apr-74 24.8100 24-Apr-74 24.7500 25-Apr-74 24.6300 26-Apr-74 24.5100 29-Apr-74 23.9800 30-Apr-74 23.0400 1-May-74 24.5100 2-May-74 23.5300 3-May-74 24.3900 6-May-74 24.4500 7-May-74 24.3900 8-May-74 24.3900 9-May-74 24.2100 10-May-74 24.1500 13-May-74 23.9200 14-May-74 23.8700 15-May-74 24.1000 16-May-74 24.3300 17-May-74 24.3900 20-May-74 24.3300 21-May-74 24.5700 22-May-74 24.5100 23-May-74 24.5100 24-May-74 24.4500 27-May-74 ND 28-May-74 24.6300 29-May-74 24.8100 30-May-74 24.9400 31-May-74 24.8100 3-Jun-74 24.7500 4-Jun-74 24.7500 5-Jun-74 24.7500 6-Jun-74 24.8100 7-Jun-74 24.6900 10-Jun-74 24.7500 11-Jun-74 24.5700 12-Jun-74 24.9400 13-Jun-74 24.9400 14-Jun-74 24.8100 17-Jun-74 24.8800 18-Jun-74 24.9400 19-Jun-74 24.9400 20-Jun-74 24.9400 21-Jun-74 24.9400 24-Jun-74 25.0000 25-Jun-74 25.3200 26-Jun-74 25.0600 27-Jun-74 25.1300 28-Jun-74 25.1300 1-Jul-74 25.1300 2-Jul-74 25.1300 3-Jul-74 25.0000 4-Jul-74 ND 5-Jul-74 25.1300 8-Jul-74 25.0000 9-Jul-74 25.1300 10-Jul-74 25.1900 11-Jul-74 25.1300 12-Jul-74 25.2500 15-Jul-74 25.1300 16-Jul-74 25.0000 17-Jul-74 25.0600 18-Jul-74 25.1300 19-Jul-74 25.0600 22-Jul-74 25.0600 23-Jul-74 25.0000 24-Jul-74 24.9400 25-Jul-74 24.8800 26-Jul-74 24.8800 29-Jul-74 25.0600 30-Jul-74 25.0600 31-Jul-74 25.2500 1-Aug-74 25.1300 2-Aug-74 25.1300 5-Aug-74 25.1300 6-Aug-74 25.0000 7-Aug-74 25.1300 8-Aug-74 25.3800 9-Aug-74 25.1900 12-Aug-74 25.1300 13-Aug-74 25.4500 14-Aug-74 25.3800 15-Aug-74 25.3800 16-Aug-74 25.5100 19-Aug-74 25.7100 20-Aug-74 25.5800 21-Aug-74 25.5800 22-Aug-74 25.5800 23-Aug-74 25.9100 26-Aug-74 25.6400 27-Aug-74 25.7100 28-Aug-74 25.9700 29-Aug-74 25.7700 30-Aug-74 25.8400 2-Sep-74 ND 3-Sep-74 25.9100 4-Sep-74 25.9100 5-Sep-74 25.9700 6-Sep-74 26.3200 9-Sep-74 25.9700 10-Sep-74 25.9100 11-Sep-74 25.9100 12-Sep-74 25.9100 13-Sep-74 25.9100 16-Sep-74 25.9700 17-Sep-74 25.9100 18-Sep-74 25.9700 19-Sep-74 25.9100 20-Sep-74 25.9100 23-Sep-74 25.9700 24-Sep-74 25.7700 25-Sep-74 25.9100 26-Sep-74 25.8400 27-Sep-74 25.8400 30-Sep-74 25.9100 1-Oct-74 25.7700 2-Oct-74 25.7700 3-Oct-74 25.9100 4-Oct-74 25.6400 7-Oct-74 25.6400 8-Oct-74 25.5100 9-Oct-74 25.4500 10-Oct-74 25.3800 11-Oct-74 25.5800 14-Oct-74 ND 15-Oct-74 25.3800 16-Oct-74 25.4500 17-Oct-74 25.3800 18-Oct-74 25.4500 21-Oct-74 25.4500 22-Oct-74 25.5100 23-Oct-74 25.3800 24-Oct-74 25.3800 25-Oct-74 25.2500 28-Oct-74 25.3200 29-Oct-74 25.3200 30-Oct-74 25.3200 31-Oct-74 25.3800 1-Nov-74 25.3200 4-Nov-74 25.2500 5-Nov-74 ND 6-Nov-74 25.2500 7-Nov-74 25.1900 8-Nov-74 25.3200 11-Nov-74 ND 12-Nov-74 25.1900 13-Nov-74 25.3800 14-Nov-74 25.2500 15-Nov-74 25.0000 18-Nov-74 24.8100 19-Nov-74 24.8100 20-Nov-74 24.9400 21-Nov-74 25.1300 22-Nov-74 25.0000 25-Nov-74 24.9400 26-Nov-74 24.7500 27-Nov-74 24.7500 28-Nov-74 ND 29-Nov-74 24.7500 2-Dec-74 24.8800 3-Dec-74 25.0000 4-Dec-74 24.8100 5-Dec-74 24.8100 6-Dec-74 24.8100 9-Dec-74 24.6900 10-Dec-74 24.7500 11-Dec-74 24.6900 12-Dec-74 24.6900 13-Dec-74 24.7500 16-Dec-74 24.7500 17-Dec-74 24.6900 18-Dec-74 24.6300 19-Dec-74 24.8100 20-Dec-74 24.8100 23-Dec-74 24.8100 24-Dec-74 24.8100 25-Dec-74 ND 26-Dec-74 24.8100 27-Dec-74 24.6900 30-Dec-74 24.5100 31-Dec-74 24.5700 1-Jan-75 ND 2-Jan-75 24.6900 3-Jan-75 24.5700 6-Jan-75 24.6300 7-Jan-75 24.5100 8-Jan-75 24.5100 9-Jan-75 24.5700 10-Jan-75 24.5100 13-Jan-75 24.5700 14-Jan-75 24.6900 15-Jan-75 24.6900 16-Jan-75 24.6300 17-Jan-75 24.5700 20-Jan-75 24.5700 21-Jan-75 24.5700 22-Jan-75 24.3900 23-Jan-75 24.3900 24-Jan-75 24.2700 27-Jan-75 24.1500 28-Jan-75 24.0400 29-Jan-75 24.3900 30-Jan-75 24.2700 31-Jan-75 24.3300 3-Feb-75 24.2700 4-Feb-75 24.6300 5-Feb-75 24.6300 6-Feb-75 24.7500 7-Feb-75 24.7500 10-Feb-75 24.5100 11-Feb-75 24.4500 12-Feb-75 ND 13-Feb-75 24.4500 14-Feb-75 24.2700 17-Feb-75 ND 18-Feb-75 24.2700 19-Feb-75 24.2700 20-Feb-75 24.2700 21-Feb-75 24.1500 24-Feb-75 24.1500 25-Feb-75 23.9800 26-Feb-75 24.0400 27-Feb-75 23.8700 28-Feb-75 23.8700 3-Mar-75 24.8100 4-Mar-75 23.8100 5-Mar-75 24.0400 6-Mar-75 23.9800 7-Mar-75 24.1000 10-Mar-75 24.3900 11-Mar-75 24.3900 12-Mar-75 24.1500 13-Mar-75 24.2100 14-Mar-75 24.2100 17-Mar-75 24.1500 18-Mar-75 24.2100 19-Mar-75 24.2100 20-Mar-75 24.2100 21-Mar-75 24.2100 24-Mar-75 24.2100 25-Mar-75 24.3300 26-Mar-75 24.3300 27-Mar-75 24.2700 28-Mar-75 24.2700 31-Mar-75 24.2700 1-Apr-75 24.3900 2-Apr-75 24.3300 3-Apr-75 24.3300 4-Apr-75 24.5100 7-Apr-75 24.5700 8-Apr-75 24.5700 9-Apr-75 24.5100 10-Apr-75 24.6300 11-Apr-75 24.6900 14-Apr-75 24.8100 15-Apr-75 24.8100 16-Apr-75 24.8100 17-Apr-75 24.8100 18-Apr-75 24.7500 21-Apr-75 24.6900 22-Apr-75 24.6300 23-Apr-75 24.6300 24-Apr-75 24.5700 25-Apr-75 24.6900 28-Apr-75 24.8800 29-Apr-75 24.7500 30-Apr-75 24.5700 1-May-75 24.5700 2-May-75 24.6300 5-May-75 24.6900 6-May-75 24.6300 7-May-75 24.5700 8-May-75 24.5100 9-May-75 24.3900 12-May-75 24.5100 13-May-75 24.3300 14-May-75 24.2700 15-May-75 24.3900 16-May-75 24.4500 19-May-75 24.3900 20-May-75 24.4500 21-May-75 24.4500 22-May-75 24.2700 23-May-75 24.3300 26-May-75 ND 27-May-75 24.3300 28-May-75 24.2100 29-May-75 24.2700 30-May-75 24.3900 2-Jun-75 24.3900 3-Jun-75 24.3900 4-Jun-75 24.3900 5-Jun-75 24.3300 6-Jun-75 24.2700 9-Jun-75 24.3900 10-Jun-75 24.3300 11-Jun-75 24.2700 12-Jun-75 24.2700 13-Jun-75 24.2100 16-Jun-75 24.2100 17-Jun-75 24.2100 18-Jun-75 24.1500 19-Jun-75 24.3300 20-Jun-75 24.3300 23-Jun-75 24.3300 24-Jun-75 24.1500 25-Jun-75 24.3900 26-Jun-75 24.3900 27-Jun-75 24.4500 30-Jun-75 24.4500 1-Jul-75 24.5700 2-Jul-75 24.6900 3-Jul-75 24.8100 4-Jul-75 ND 7-Jul-75 24.9400 8-Jul-75 24.8800 9-Jul-75 24.8800 10-Jul-75 25.1300 11-Jul-75 25.1300 14-Jul-75 25.3800 15-Jul-75 25.1900 16-Jul-75 25.5100 17-Jul-75 25.5100 18-Jul-75 25.6400 21-Jul-75 25.8400 22-Jul-75 25.7700 23-Jul-75 26.0400 24-Jul-75 26.0400 25-Jul-75 26.0400 28-Jul-75 25.9700 29-Jul-75 26.3900 30-Jul-75 26.3200 31-Jul-75 26.4600 1-Aug-75 26.5300 4-Aug-75 26.6000 5-Aug-75 26.3200 6-Aug-75 26.3200 7-Aug-75 26.5300 8-Aug-75 26.5300 11-Aug-75 26.6700 12-Aug-75 26.6000 13-Aug-75 26.6000 14-Aug-75 26.6000 15-Aug-75 26.5300 18-Aug-75 26.5300 19-Aug-75 26.4600 20-Aug-75 26.3900 21-Aug-75 26.4600 22-Aug-75 26.4600 25-Aug-75 26.5300 26-Aug-75 26.6000 27-Aug-75 26.6700 28-Aug-75 26.6000 29-Aug-75 26.6000 1-Sep-75 ND 2-Sep-75 26.6700 3-Sep-75 26.6000 4-Sep-75 26.6700 5-Sep-75 26.6000 8-Sep-75 26.6000 9-Sep-75 26.6000 10-Sep-75 26.6700 11-Sep-75 26.7400 12-Sep-75 26.7400 15-Sep-75 26.8100 16-Sep-75 26.8100 17-Sep-75 27.1700 18-Sep-75 27.1000 19-Sep-75 27.1000 22-Sep-75 27.2500 23-Sep-75 27.5500 24-Sep-75 27.4700 25-Sep-75 27.4700 26-Sep-75 27.3200 29-Sep-75 27.5500 30-Sep-75 27.4700 1-Oct-75 27.4000 2-Oct-75 27.3200 3-Oct-75 27.1700 6-Oct-75 27.1700 7-Oct-75 27.0300 8-Oct-75 27.0300 9-Oct-75 26.9500 10-Oct-75 26.7400 13-Oct-75 ND 14-Oct-75 26.7400 15-Oct-75 26.7400 16-Oct-75 26.6000 17-Oct-75 26.6700 20-Oct-75 26.6000 21-Oct-75 26.6000 22-Oct-75 26.4600 23-Oct-75 26.5300 24-Oct-75 26.5300 27-Oct-75 26.4600 28-Oct-75 26.6000 29-Oct-75 26.6700 30-Oct-75 26.4600 31-Oct-75 26.5300 3-Nov-75 26.5300 4-Nov-75 ND 5-Nov-75 26.6000 6-Nov-75 26.6700 7-Nov-75 26.6700 10-Nov-75 26.6000 11-Nov-75 ND 12-Nov-75 26.6700 13-Nov-75 26.6700 14-Nov-75 26.8800 17-Nov-75 26.8100 18-Nov-75 26.9500 19-Nov-75 26.9500 20-Nov-75 26.8100 21-Nov-75 26.8100 24-Nov-75 26.8800 25-Nov-75 26.8800 26-Nov-75 27.0300 27-Nov-75 ND 28-Nov-75 27.1700 1-Dec-75 27.1700 2-Dec-75 27.0300 3-Dec-75 27.0300 4-Dec-75 26.9500 5-Dec-75 26.9500 8-Dec-75 27.0300 9-Dec-75 27.0300 10-Dec-75 27.0300 11-Dec-75 27.1700 12-Dec-75 27.1000 15-Dec-75 27.1700 16-Dec-75 27.1700 17-Dec-75 27.2500 18-Dec-75 27.1700 19-Dec-75 27.2500 22-Dec-75 27.1700 23-Dec-75 27.2500 24-Dec-75 27.2500 25-Dec-75 ND 26-Dec-75 27.2500 29-Dec-75 27.2500 30-Dec-75 27.3200 31-Dec-75 27.2500 1-Jan-76 ND 2-Jan-76 27.4000 5-Jan-76 27.3200 6-Jan-76 27.1700 7-Jan-76 27.1700 8-Jan-76 27.1700 9-Jan-76 27.2500 12-Jan-76 27.2500 13-Jan-76 27.7800 14-Jan-76 27.3200 15-Jan-76 27.3200 16-Jan-76 27.3200 19-Jan-76 27.3200 20-Jan-76 27.3200 21-Jan-76 27.4700 22-Jan-76 27.5500 23-Jan-76 27.4700 26-Jan-76 27.4000 27-Jan-76 27.3200 28-Jan-76 27.3200 29-Jan-76 27.4000 30-Jan-76 27.3200 2-Feb-76 27.4000 3-Feb-76 27.3200 4-Feb-76 27.3200 5-Feb-76 27.3200 6-Feb-76 27.3200 9-Feb-76 27.2500 10-Feb-76 27.3200 11-Feb-76 27.2500 12-Feb-76 ND 13-Feb-76 27.2500 16-Feb-76 ND 17-Feb-76 27.6200 18-Feb-76 27.5500 19-Feb-76 27.4700 20-Feb-76 27.5500 23-Feb-76 27.7000 24-Feb-76 27.6200 25-Feb-76 27.7000 26-Feb-76 27.8600 27-Feb-76 27.7800 1-Mar-76 27.8600 2-Mar-76 28.1700 3-Mar-76 28.0900 4-Mar-76 28.0100 5-Mar-76 26.5300 8-Mar-76 28.2500 9-Mar-76 28.1700 10-Mar-76 28.1700 11-Mar-76 28.3300 12-Mar-76 28.4100 15-Mar-76 28.5700 16-Mar-76 28.5700 17-Mar-76 28.7400 18-Mar-76 28.9900 19-Mar-76 28.9900 22-Mar-76 28.9900 23-Mar-76 29.2400 24-Mar-76 29.3300 25-Mar-76 29.2400 26-Mar-76 29.2400 29-Mar-76 29.2400 30-Mar-76 29.3300 31-Mar-76 29.3300 1-Apr-76 29.3300 2-Apr-76 29.3300 5-Apr-76 29.5000 6-Apr-76 29.5900 7-Apr-76 29.5000 8-Apr-76 29.5900 9-Apr-76 29.5000 12-Apr-76 29.5900 13-Apr-76 29.7600 14-Apr-76 29.6700 15-Apr-76 29.5900 16-Apr-76 29.6700 19-Apr-76 29.5000 20-Apr-76 29.6700 21-Apr-76 29.6700 22-Apr-76 29.6700 23-Apr-76 29.7600 26-Apr-76 29.7600 27-Apr-76 29.7600 28-Apr-76 29.7600 29-Apr-76 29.7600 30-Apr-76 29.7600 3-May-76 29.7600 4-May-76 29.6700 5-May-76 29.8500 6-May-76 29.8500 7-May-76 29.8500 10-May-76 29.8500 11-May-76 29.8500 12-May-76 29.8500 13-May-76 29.9400 14-May-76 30.0300 17-May-76 30.0300 18-May-76 30.4000 19-May-76 30.3000 20-May-76 30.3000 21-May-76 30.4900 24-May-76 30.4900 25-May-76 30.4000 26-May-76 30.4900 27-May-76 30.5800 28-May-76 30.5800 31-May-76 ND 1-Jun-76 30.7700 2-Jun-76 30.8600 3-Jun-76 30.8600 4-Jun-76 30.8600 7-Jun-76 30.9600 8-Jun-76 30.9600 9-Jun-76 30.9600 10-Jun-76 30.9600 11-Jun-76 30.9600 14-Jun-76 30.9600 15-Jun-76 30.9600 16-Jun-76 30.9600 17-Jun-76 30.9600 18-Jun-76 31.1500 21-Jun-76 31.1500 22-Jun-76 31.2500 23-Jun-76 31.2500 24-Jun-76 31.6500 25-Jun-76 31.4500 28-Jun-76 31.4500 29-Jun-76 31.5500 30-Jun-76 31.5500 1-Jul-76 31.5500 2-Jul-76 31.4500 5-Jul-76 ND 6-Jul-76 31.4500 7-Jul-76 31.4500 8-Jul-76 31.4500 9-Jul-76 31.4500 12-Jul-76 31.3500 13-Jul-76 31.4500 14-Jul-76 31.4500 15-Jul-76 31.3500 16-Jul-76 31.4500 19-Jul-76 31.4500 20-Jul-76 31.4500 21-Jul-76 31.4500 22-Jul-76 31.4500 23-Jul-76 31.3500 26-Jul-76 31.4500 27-Jul-76 31.4500 28-Jul-76 31.5500 29-Jul-76 31.4500 30-Jul-76 31.3500 2-Aug-76 31.2500 3-Aug-76 31.2500 4-Aug-76 31.2500 5-Aug-76 31.1500 6-Aug-76 31.2500 9-Aug-76 31.3500 10-Aug-76 31.2500 11-Aug-76 31.3500 12-Aug-76 31.3500 13-Aug-76 31.2500 16-Aug-76 31.3500 17-Aug-76 31.4500 18-Aug-76 31.1500 19-Aug-76 31.1500 20-Aug-76 31.1500 23-Aug-76 31.4500 24-Aug-76 31.4500 25-Aug-76 31.2500 26-Aug-76 31.1500 27-Aug-76 31.3500 30-Aug-76 31.1500 31-Aug-76 31.1500 1-Sep-76 31.1500 2-Sep-76 31.1500 3-Sep-76 31.1500 6-Sep-76 ND 7-Sep-76 31.2500 8-Sep-76 31.2500 9-Sep-76 31.2500 10-Sep-76 31.2500 13-Sep-76 31.1500 14-Sep-76 31.1500 15-Sep-76 31.1500 16-Sep-76 31.1500 17-Sep-76 31.0600 20-Sep-76 31.0600 21-Sep-76 31.1500 22-Sep-76 31.1500 23-Sep-76 31.1500 24-Sep-76 31.2500 27-Sep-76 31.2500 28-Sep-76 31.2500 29-Sep-76 31.3500 30-Sep-76 31.2500 1-Oct-76 31.1500 4-Oct-76 31.2500 5-Oct-76 31.2500 6-Oct-76 31.1500 7-Oct-76 31.1500 8-Oct-76 31.2500 11-Oct-76 ND 12-Oct-76 31.2500 13-Oct-76 31.3500 14-Oct-76 31.2500 15-Oct-76 31.3500 18-Oct-76 31.4500 19-Oct-76 31.4500 20-Oct-76 31.3500 21-Oct-76 31.4500 22-Oct-76 31.4500 25-Oct-76 31.2500 26-Oct-76 31.4500 27-Oct-76 31.4500 28-Oct-76 31.4500 29-Oct-76 31.4500 1-Nov-76 31.4500 2-Nov-76 ND 3-Nov-76 31.3500 4-Nov-76 31.4500 5-Nov-76 31.5500 8-Nov-76 31.4500 9-Nov-76 31.4500 10-Nov-76 31.4500 11-Nov-76 ND 12-Nov-76 31.5500 15-Nov-76 31.5500 16-Nov-76 31.4500 17-Nov-76 31.4500 18-Nov-76 31.4500 19-Nov-76 31.4500 22-Nov-76 31.5500 23-Nov-76 31.5500 24-Nov-76 31.5500 25-Nov-76 ND 26-Nov-76 31.5500 29-Nov-76 31.6500 30-Nov-76 31.7500 1-Dec-76 31.5500 2-Dec-76 31.6500 3-Dec-76 31.6500 6-Dec-76 31.6500 7-Dec-76 31.5500 8-Dec-76 31.5500 9-Dec-76 31.5500 10-Dec-76 31.6500 13-Dec-76 31.6500 14-Dec-76 31.6500 15-Dec-76 31.6500 16-Dec-76 31.6500 17-Dec-76 31.6500 20-Dec-76 31.5500 21-Dec-76 31.1500 22-Dec-76 31.4500 23-Dec-76 31.4500 24-Dec-76 31.5500 27-Dec-76 31.5500 28-Dec-76 31.5500 29-Dec-76 31.5500 30-Dec-76 31.5500 31-Dec-76 31.8500 3-Jan-77 31.4500 4-Jan-77 31.4500 5-Jan-77 31.4500 6-Jan-77 31.5500 7-Jan-77 31.6500 10-Jan-77 31.9500 11-Jan-77 31.9500 12-Jan-77 31.9500 13-Jan-77 31.9500 14-Jan-77 32.1500 17-Jan-77 32.1500 18-Jan-77 32.1500 19-Jan-77 32.2600 20-Jan-77 32.1500 21-Jan-77 32.1500 24-Jan-77 31.2500 25-Jan-77 32.4700 26-Jan-77 32.4700 27-Jan-77 32.3600 28-Jan-77 32.2600 31-Jan-77 32.3600 1-Feb-77 32.2600 2-Feb-77 32.3600 3-Feb-77 32.3600 4-Feb-77 32.3600 7-Feb-77 32.4700 8-Feb-77 32.3600 9-Feb-77 32.3600 10-Feb-77 32.4700 11-Feb-77 32.5700 14-Feb-77 32.4700 15-Feb-77 32.4700 16-Feb-77 32.4700 17-Feb-77 32.6800 18-Feb-77 32.5700 21-Feb-77 ND 22-Feb-77 32.8900 23-Feb-77 33.0000 24-Feb-77 33.0000 25-Feb-77 32.8900 28-Feb-77 ND 1-Mar-77 38.7600 2-Mar-77 38.9100 3-Mar-77 38.9100 4-Mar-77 38.7600 7-Mar-77 38.7600 8-Mar-77 38.9100 9-Mar-77 38.9100 10-Mar-77 38.7600 11-Mar-77 38.7600 14-Mar-77 38.7600 15-Mar-77 38.9100 16-Mar-77 38.7600 17-Mar-77 38.7600 18-Mar-77 38.7600 21-Mar-77 38.7600 22-Mar-77 38.7600 23-Mar-77 38.7600 24-Mar-77 38.7600 25-Mar-77 38.7600 28-Mar-77 38.7600 29-Mar-77 38.7600 30-Mar-77 38.7600 31-Mar-77 38.7600 1-Apr-77 38.7600 4-Apr-77 38.7600 5-Apr-77 38.9100 6-Apr-77 38.9100 7-Apr-77 38.9100 8-Apr-77 38.7600 11-Apr-77 38.7600 12-Apr-77 38.7600 13-Apr-77 38.7600 14-Apr-77 38.7600 15-Apr-77 38.9100 18-Apr-77 38.9100 19-Apr-77 38.9100 20-Apr-77 38.9100 21-Apr-77 38.9100 22-Apr-77 38.9100 25-Apr-77 38.7600 26-Apr-77 38.7600 27-Apr-77 38.7600 28-Apr-77 38.7600 29-Apr-77 38.9100 2-May-77 38.6100 3-May-77 38.6100 4-May-77 38.7600 5-May-77 38.6100 6-May-77 38.7600 9-May-77 38.7600 10-May-77 38.7600 11-May-77 38.7600 12-May-77 38.7600 13-May-77 38.7600 16-May-77 38.6800 17-May-77 38.7600 18-May-77 38.7200 19-May-77 38.7600 20-May-77 38.7600 23-May-77 38.7600 24-May-77 38.7600 25-May-77 38.7600 26-May-77 38.7600 27-May-77 38.7600 30-May-77 ND 31-May-77 38.7600 1-Jun-77 38.7600 2-Jun-77 38.7600 3-Jun-77 38.7600 6-Jun-77 38.7600 7-Jun-77 38.7600 8-Jun-77 38.7600 9-Jun-77 38.7600 10-Jun-77 38.7600 13-Jun-77 38.7600 14-Jun-77 38.7600 15-Jun-77 38.7600 16-Jun-77 38.6800 17-Jun-77 38.7600 20-Jun-77 38.7600 21-Jun-77 38.7600 22-Jun-77 38.7600 23-Jun-77 38.7600 24-Jun-77 38.7600 27-Jun-77 38.7600 28-Jun-77 38.7600 29-Jun-77 38.7600 30-Jun-77 38.7600 1-Jul-77 38.7600 4-Jul-77 ND 5-Jul-77 38.6100 6-Jul-77 38.6100 7-Jul-77 38.4600 8-Jul-77 38.4600 11-Jul-77 38.4600 12-Jul-77 38.4600 13-Jul-77 38.6100 14-Jul-77 ND 15-Jul-77 38.7600 18-Jul-77 38.6100 19-Jul-77 38.6100 20-Jul-77 38.4600 21-Jul-77 38.4600 22-Jul-77 38.4600 25-Jul-77 38.4600 26-Jul-77 38.3100 27-Jul-77 38.4600 28-Jul-77 38.4600 29-Jul-77 38.6100 1-Aug-77 38.6100 2-Aug-77 38.6100 3-Aug-77 38.5400 4-Aug-77 38.5400 5-Aug-77 38.6100 8-Aug-77 38.6800 9-Aug-77 38.9100 10-Aug-77 38.8000 11-Aug-77 38.9100 12-Aug-77 38.9100 15-Aug-77 38.7600 16-Aug-77 38.9100 17-Aug-77 38.8300 18-Aug-77 39.2200 19-Aug-77 39.0600 22-Aug-77 38.9100 23-Aug-77 38.9900 24-Aug-77 38.8000 25-Aug-77 38.7600 26-Aug-77 40.0000 29-Aug-77 39.0600 30-Aug-77 39.0600 31-Aug-77 40.3200 1-Sep-77 40.3200 2-Sep-77 40.3200 5-Sep-77 ND 6-Sep-77 40.8200 7-Sep-77 40.6500 8-Sep-77 40.8200 9-Sep-77 40.6900 12-Sep-77 40.6900 13-Sep-77 40.6100 14-Sep-77 40.6500 15-Sep-77 40.6500 16-Sep-77 40.4900 19-Sep-77 40.6100 20-Sep-77 40.4900 21-Sep-77 40.5700 22-Sep-77 40.6500 23-Sep-77 40.6500 26-Sep-77 40.6500 27-Sep-77 40.8200 28-Sep-77 40.7700 29-Sep-77 40.7700 30-Sep-77 40.7700 3-Oct-77 40.7700 4-Oct-77 40.6900 5-Oct-77 40.6500 6-Oct-77 40.6500 7-Oct-77 40.6500 10-Oct-77 ND 11-Oct-77 40.6500 12-Oct-77 40.6900 13-Oct-77 40.5700 14-Oct-77 40.6100 17-Oct-77 40.4900 18-Oct-77 40.4900 19-Oct-77 40.4900 20-Oct-77 40.6500 21-Oct-77 40.6900 24-Oct-77 40.5300 25-Oct-77 40.5700 26-Oct-77 40.6900 27-Oct-77 40.6900 28-Oct-77 40.8200 31-Oct-77 40.9400 1-Nov-77 40.6100 2-Nov-77 40.6500 3-Nov-77 40.6100 4-Nov-77 40.6900 7-Nov-77 40.6900 8-Nov-77 ND 9-Nov-77 40.6900 10-Nov-77 40.6900 11-Nov-77 ND 14-Nov-77 40.6500 15-Nov-77 40.7700 16-Nov-77 40.6900 17-Nov-77 40.7700 18-Nov-77 40.7700 21-Nov-77 40.6900 22-Nov-77 40.6900 23-Nov-77 40.6500 24-Nov-77 ND 25-Nov-77 40.6500 28-Nov-77 40.6900 29-Nov-77 40.6100 30-Nov-77 40.8600 1-Dec-77 40.6900 2-Dec-77 40.6500 5-Dec-77 40.6100 6-Dec-77 40.3200 7-Dec-77 40.6500 8-Dec-77 40.6500 9-Dec-77 40.7700 12-Dec-77 40.5700 13-Dec-77 40.4000 14-Dec-77 40.0000 15-Dec-77 40.3600 16-Dec-77 40.4900 19-Dec-77 40.3200 20-Dec-77 40.0000 21-Dec-77 40.0800 22-Dec-77 40.3200 23-Dec-77 40.4900 26-Dec-77 ND 27-Dec-77 40.4900 28-Dec-77 40.3200 29-Dec-77 40.0800 30-Dec-77 40.0800 2-Jan-78 ND 3-Jan-78 39.7200 4-Jan-78 39.2200 5-Jan-78 40.6500 6-Jan-78 40.4900 9-Jan-78 40.6100 10-Jan-78 40.4000 11-Jan-78 40.2000 12-Jan-78 40.1600 13-Jan-78 40.4900 16-Jan-78 40.4000 17-Jan-78 40.4400 18-Jan-78 40.6900 19-Jan-78 40.4000 20-Jan-78 40.3200 23-Jan-78 40.1600 24-Jan-78 40.1600 25-Jan-78 40.0400 26-Jan-78 40.1600 27-Jan-78 40.3200 30-Jan-78 40.2400 31-Jan-78 40.1600 1-Feb-78 40.0800 2-Feb-78 40.2000 3-Feb-78 40.7700 6-Feb-78 40.4400 7-Feb-78 40.3200 8-Feb-78 40.4000 9-Feb-78 40.4900 10-Feb-78 40.5300 13-Feb-78 ND 14-Feb-78 40.2800 15-Feb-78 40.4000 16-Feb-78 40.4000 17-Feb-78 40.2400 20-Feb-78 ND 21-Feb-78 40.2000 22-Feb-78 40.1200 23-Feb-78 40.0800 24-Feb-78 39.9200 27-Feb-78 40.4400 28-Feb-78 40.3200 1-Mar-78 40.0800 2-Mar-78 40.4000 3-Mar-78 40.6500 6-Mar-78 40.6900 7-Mar-78 40.8600 8-Mar-78 40.6100 9-Mar-78 40.9000 10-Mar-78 40.4900 13-Mar-78 40.5700 14-Mar-78 41.1900 15-Mar-78 41.0700 16-Mar-78 40.9000 17-Mar-78 40.9000 20-Mar-78 41.1100 21-Mar-78 41.1500 22-Mar-78 40.9800 23-Mar-78 40.9400 24-Mar-78 40.9000 27-Mar-78 41.1500 28-Mar-78 40.9400 29-Mar-78 40.9800 30-Mar-78 41.0700 31-Mar-78 40.9400 3-Apr-78 40.9400 4-Apr-78 41.0700 5-Apr-78 41.1500 6-Apr-78 41.0700 7-Apr-78 41.2800 10-Apr-78 41.0700 11-Apr-78 41.1500 12-Apr-78 41.1500 13-Apr-78 41.2400 14-Apr-78 41.4100 17-Apr-78 41.4900 18-Apr-78 41.4900 19-Apr-78 41.5400 20-Apr-78 41.9300 21-Apr-78 42.1100 24-Apr-78 42.1100 25-Apr-78 42.1100 26-Apr-78 42.0200 27-Apr-78 42.1100 28-Apr-78 42.4200 1-May-78 42.4200 2-May-78 42.3700 3-May-78 42.2800 4-May-78 42.2800 5-May-78 44.9900 8-May-78 45.2500 9-May-78 45.4500 10-May-78 45.2500 11-May-78 45.2500 12-May-78 45.4500 15-May-78 45.8200 16-May-78 45.7100 17-May-78 45.8200 18-May-78 45.7100 19-May-78 45.7700 22-May-78 46.0300 23-May-78 45.8700 24-May-78 46.0800 25-May-78 45.9800 26-May-78 45.8700 29-May-78 45.9200 30-May-78 ND 31-May-78 45.9200 1-Jun-78 45.6600 2-Jun-78 45.4500 5-Jun-78 45.5100 6-Jun-78 46.0300 7-Jun-78 45.9200 8-Jun-78 45.7100 9-Jun-78 45.8700 12-Jun-78 45.7700 13-Jun-78 45.6100 14-Jun-78 45.7100 15-Jun-78 45.8700 16-Jun-78 45.9200 19-Jun-78 45.7700 20-Jun-78 45.7100 21-Jun-78 45.7700 22-Jun-78 45.7700 23-Jun-78 45.7700 26-Jun-78 45.7100 27-Jun-78 45.8700 28-Jun-78 45.7100 29-Jun-78 45.7700 30-Jun-78 45.6600 3-Jul-78 45.5600 4-Jul-78 ND 5-Jul-78 45.4500 6-Jul-78 45.5600 7-Jul-78 45.7700 10-Jul-78 45.4500 11-Jul-78 45.5100 12-Jul-78 45.6100 13-Jul-78 45.5600 14-Jul-78 45.6100 17-Jul-78 45.6600 18-Jul-78 45.7700 19-Jul-78 45.6600 20-Jul-78 45.6600 21-Jul-78 45.5600 24-Jul-78 45.3500 25-Jul-78 45.4500 26-Jul-78 45.5600 27-Jul-78 45.7100 28-Jul-78 45.6600 31-Jul-78 45.5100 1-Aug-78 45.3500 2-Aug-78 45.6600 3-Aug-78 45.3500 4-Aug-78 45.6100 7-Aug-78 45.6100 8-Aug-78 45.3500 9-Aug-78 45.4500 10-Aug-78 45.3000 11-Aug-78 44.8400 14-Aug-78 44.5400 15-Aug-78 44.4400 16-Aug-78 44.4400 17-Aug-78 45.4000 18-Aug-78 44.8400 21-Aug-78 45.9800 22-Aug-78 45.3500 23-Aug-78 45.9800 24-Aug-78 45.8700 25-Aug-78 45.8700 28-Aug-78 45.7700 29-Aug-78 45.8700 30-Aug-78 45.2000 31-Aug-78 45.4500 1-Sep-78 45.4000 4-Sep-78 ND 5-Sep-78 45.2500 6-Sep-78 45.4500 7-Sep-78 45.6000 8-Sep-78 45.6500 11-Sep-78 46.0000 12-Sep-78 45.7000 13-Sep-78 45.7000 14-Sep-78 45.6500 15-Sep-78 45.6500 18-Sep-78 45.6500 19-Sep-78 45.4500 20-Sep-78 45.3000 21-Sep-78 45.3000 22-Sep-78 45.6500 25-Sep-78 45.3000 26-Sep-78 45.6500 27-Sep-78 45.6000 28-Sep-78 45.6000 29-Sep-78 45.7000 2-Oct-78 45.6500 3-Oct-78 45.3800 4-Oct-78 45.4000 5-Oct-78 45.3500 6-Oct-78 45.4500 9-Oct-78 ND 10-Oct-78 45.1500 11-Oct-78 45.0000 12-Oct-78 44.9500 13-Oct-78 45.0000 16-Oct-78 45.0000 17-Oct-78 44.9000 18-Oct-78 44.7000 19-Oct-78 45.9000 20-Oct-78 44.7500 23-Oct-78 44.6000 24-Oct-78 44.8000 25-Oct-78 44.2000 26-Oct-78 43.9000 27-Oct-78 43.7500 30-Oct-78 43.1000 31-Oct-78 43.2500 1-Nov-78 44.7000 2-Nov-78 46.0000 3-Nov-78 46.4000 6-Nov-78 46.3500 7-Nov-78 ND 8-Nov-78 45.8000 9-Nov-78 45.9000 10-Nov-78 46.2000 13-Nov-78 46.0000 14-Nov-78 46.1500 15-Nov-78 46.3000 16-Nov-78 46.8000 17-Nov-78 47.0000 20-Nov-78 47.3000 21-Nov-78 46.9500 22-Nov-78 47.0500 23-Nov-78 ND 24-Nov-78 46.9500 27-Nov-78 47.1500 28-Nov-78 47.0500 29-Nov-78 46.9300 30-Nov-78 47.0000 1-Dec-78 47.2000 4-Dec-78 46.9500 5-Dec-78 47.1800 6-Dec-78 47.0200 7-Dec-78 46.9000 8-Dec-78 46.8800 11-Dec-78 46.8500 12-Dec-78 46.8000 13-Dec-78 46.7500 14-Dec-78 46.7500 15-Dec-78 46.8000 18-Dec-78 46.2000 19-Dec-78 46.0500 20-Dec-78 46.0000 21-Dec-78 46.5500 22-Dec-78 46.4000 25-Dec-78 ND 26-Dec-78 46.4000 27-Dec-78 45.9000 28-Dec-78 45.9500 29-Dec-78 46.0000 1-Jan-79 ND 2-Jan-79 45.8000 3-Jan-79 46.4800 4-Jan-79 46.7500 5-Jan-79 46.8000 8-Jan-79 46.6000 9-Jan-79 46.5500 10-Jan-79 46.7800 11-Jan-79 47.1500 12-Jan-79 47.0500 15-Jan-79 47.1000 16-Jan-79 46.9500 17-Jan-79 46.5500 18-Jan-79 46.6500 19-Jan-79 46.6500 22-Jan-79 46.7000 23-Jan-79 46.7600 24-Jan-79 46.9000 25-Jan-79 47.1000 26-Jan-79 47.0000 29-Jan-79 47.3000 30-Jan-79 47.1500 31-Jan-79 47.3500 1-Feb-79 47.7500 2-Feb-79 47.8500 5-Feb-79 47.4000 6-Feb-79 47.2000 7-Feb-79 47.0800 8-Feb-79 47.0500 9-Feb-79 47.4000 12-Feb-79 ND 13-Feb-79 47.4500 14-Feb-79 47.5500 15-Feb-79 47.5000 16-Feb-79 47.5000 19-Feb-79 ND 20-Feb-79 47.5500 21-Feb-79 47.5000 22-Feb-79 47.5700 23-Feb-79 47.5500 26-Feb-79 47.5200 27-Feb-79 47.5200 28-Feb-79 47.5800 1-Mar-79 47.6500 2-Mar-79 47.6700 5-Mar-79 47.7400 6-Mar-79 47.7200 7-Mar-79 47.7000 8-Mar-79 47.6300 9-Mar-79 47.6800 12-Mar-79 47.7700 13-Mar-79 47.9500 14-Mar-79 48.0000 15-Mar-79 47.8800 16-Mar-79 48.0000 19-Mar-79 48.0800 20-Mar-79 48.0500 21-Mar-79 48.1500 22-Mar-79 48.1000 23-Mar-79 48.1500 26-Mar-79 48.1000 27-Mar-79 48.2000 28-Mar-79 48.1000 29-Mar-79 48.2800 30-Mar-79 48.3200 2-Apr-79 48.5300 3-Apr-79 48.4800 4-Apr-79 48.4500 5-Apr-79 48.4700 6-Apr-79 48.6500 9-Apr-79 48.7800 10-Apr-79 48.7300 11-Apr-79 48.7000 12-Apr-79 48.7500 13-Apr-79 48.8000 16-Apr-79 48.9500 17-Apr-79 48.8800 18-Apr-79 48.9500 19-Apr-79 48.8300 20-Apr-79 49.0000 23-Apr-79 49.0500 24-Apr-79 48.9500 25-Apr-79 48.9500 26-Apr-79 49.0600 27-Apr-79 49.0600 30-Apr-79 49.2800 1-May-79 49.1000 2-May-79 49.0200 3-May-79 49.1200 4-May-79 49.0500 7-May-79 49.0500 8-May-79 49.0000 9-May-79 49.0800 10-May-79 49.1500 11-May-79 49.3000 14-May-79 49.3000 15-May-79 49.4500 16-May-79 49.5000 17-May-79 49.6000 18-May-79 49.8000 21-May-79 49.8800 22-May-79 49.8000 23-May-79 50.0100 24-May-79 49.5500 25-May-79 49.8500 28-May-79 49.9000 29-May-79 49.9500 30-May-79 ND 31-May-79 49.9300 1-Jun-79 49.9000 4-Jun-79 49.9000 5-Jun-79 49.9100 6-Jun-79 49.9500 7-Jun-79 49.9000 8-Jun-79 49.9000 11-Jun-79 49.9000 12-Jun-79 49.9300 13-Jun-79 49.9000 14-Jun-79 49.7900 15-Jun-79 49.6500 18-Jun-79 49.6000 19-Jun-79 49.3500 20-Jun-79 49.3000 21-Jun-79 49.2000 22-Jun-79 49.0500 25-Jun-79 48.8800 26-Jun-79 49.1200 27-Jun-79 48.9500 28-Jun-79 49.0000 29-Jun-79 49.0200 2-Jul-79 48.9300 3-Jul-79 49.0000 4-Jul-79 ND 5-Jul-79 48.8000 6-Jul-79 48.8500 9-Jul-79 49.0000 10-Jul-79 48.8900 11-Jul-79 48.7500 12-Jul-79 48.7700 13-Jul-79 48.8600 16-Jul-79 48.6700 17-Jul-79 48.5000 18-Jul-79 48.4000 19-Jul-79 48.3200 20-Jul-79 48.6300 23-Jul-79 48.4000 24-Jul-79 48.3500 25-Jul-79 48.5000 26-Jul-79 48.5000 27-Jul-79 48.5500 30-Jul-79 48.6500 31-Jul-79 48.5500 1-Aug-79 48.9000 2-Aug-79 48.9500 3-Aug-79 48.9800 6-Aug-79 48.9800 7-Aug-79 49.2000 8-Aug-79 49.2500 9-Aug-79 49.1500 10-Aug-79 49.0500 13-Aug-79 49.1800 14-Aug-79 49.2000 15-Aug-79 49.1700 16-Aug-79 49.2000 17-Aug-79 49.2500 20-Aug-79 49.2700 21-Aug-79 49.2500 22-Aug-79 49.2300 23-Aug-79 49.2300 24-Aug-79 49.2800 27-Aug-79 49.3500 28-Aug-79 49.2700 29-Aug-79 49.2800 30-Aug-79 49.3200 31-Aug-79 49.2700 3-Sep-79 ND 4-Sep-79 49.2500 5-Sep-79 49.2200 6-Sep-79 49.1200 7-Sep-79 49.1300 10-Sep-79 49.0100 11-Sep-79 49.1100 12-Sep-79 49.1800 13-Sep-79 49.3000 14-Sep-79 49.3000 17-Sep-79 49.8000 18-Sep-79 49.5600 19-Sep-79 49.5800 20-Sep-79 49.2000 21-Sep-79 49.3000 24-Sep-79 49.3500 25-Sep-79 49.3200 26-Sep-79 49.3500 27-Sep-79 49.1000 28-Sep-79 48.9500 1-Oct-79 49.0000 2-Oct-79 49.0000 3-Oct-79 49.3500 4-Oct-79 49.3500 5-Oct-79 49.3500 8-Oct-79 ND 9-Oct-79 50.2000 10-Oct-79 49.8500 11-Oct-79 50.1500 12-Oct-79 49.8000 15-Oct-79 49.9000 16-Oct-79 49.9300 17-Oct-79 50.1800 18-Oct-79 50.0000 19-Oct-79 50.0000 22-Oct-79 50.4000 23-Oct-79 50.3500 24-Oct-79 50.6300 25-Oct-79 50.4500 26-Oct-79 50.5700 29-Oct-79 50.6500 30-Oct-79 50.7000 31-Oct-79 50.7500 1-Nov-79 50.6500 2-Nov-79 50.7000 5-Nov-79 50.6500 6-Nov-79 ND 7-Nov-79 50.4500 8-Nov-79 50.5000 9-Nov-79 50.5700 12-Nov-79 ND 13-Nov-79 50.6000 14-Nov-79 50.5000 15-Nov-79 50.6000 16-Nov-79 50.5700 19-Nov-79 50.3500 20-Nov-79 50.5500 21-Nov-79 50.0500 22-Nov-79 ND 23-Nov-79 50.2000 26-Nov-79 50.2500 27-Nov-79 50.0000 28-Nov-79 50.0500 29-Nov-79 50.0200 30-Nov-79 49.8500 3-Dec-79 49.5500 4-Dec-79 49.7500 5-Dec-79 50.0000 6-Dec-79 50.0500 7-Dec-79 50.3000 10-Dec-79 50.2000 11-Dec-79 50.0000 12-Dec-79 49.8000 13-Dec-79 49.9000 14-Dec-79 49.9300 17-Dec-79 49.9500 18-Dec-79 49.8300 19-Dec-79 49.8700 20-Dec-79 49.8500 21-Dec-79 49.9000 24-Dec-79 49.9000 25-Dec-79 ND 26-Dec-79 49.9000 27-Dec-79 49.8500 28-Dec-79 49.8500 31-Dec-79 49.8500 1-Jan-80 ND 2-Jan-80 49.7000 3-Jan-80 49.5200 4-Jan-80 49.6500 7-Jan-80 49.5600 8-Jan-80 49.6500 9-Jan-80 49.6300 10-Jan-80 49.6000 11-Jan-80 49.7000 14-Jan-80 49.7000 15-Jan-80 50.0000 16-Jan-80 49.8500 17-Jan-80 49.8500 18-Jan-80 49.8500 21-Jan-80 49.8500 22-Jan-80 49.9800 23-Jan-80 50.1000 24-Jan-80 50.0500 25-Jan-80 50.1000 28-Jan-80 50.1500 29-Jan-80 50.2300 30-Jan-80 50.2200 31-Jan-80 50.3000 1-Feb-80 50.4000 4-Feb-80 50.3000 5-Feb-80 50.2200 6-Feb-80 50.0700 7-Feb-80 50.1500 8-Feb-80 50.2000 11-Feb-80 47.5000 12-Feb-80 ND 13-Feb-80 47.3000 14-Feb-80 47.2500 15-Feb-80 47.3200 18-Feb-80 ND 19-Feb-80 47.5700 20-Feb-80 47.6500 21-Feb-80 47.6500 22-Feb-80 47.8000 25-Feb-80 47.9000 26-Feb-80 47.9700 27-Feb-80 48.0000 28-Feb-80 47.9500 29-Feb-80 48.1800 3-Mar-80 48.3900 4-Mar-80 48.4700 5-Mar-80 48.6300 6-Mar-80 48.7000 7-Mar-80 49.0000 10-Mar-80 49.1500 11-Mar-80 49.0800 12-Mar-80 48.9000 13-Mar-80 49.2000 14-Mar-80 49.5500 17-Mar-80 50.1000 18-Mar-80 50.2700 19-Mar-80 50.1000 20-Mar-80 50.0500 21-Mar-80 50.2700 24-Mar-80 50.5500 25-Mar-80 50.5500 26-Mar-80 50.5000 27-Mar-80 50.8000 28-Mar-80 50.9300 31-Mar-80 51.0500 1-Apr-80 51.8000 2-Apr-80 51.5500 3-Apr-80 51.3500 4-Apr-80 51.6000 7-Apr-80 51.8000 8-Apr-80 51.6200 9-Apr-80 50.7200 10-Apr-80 50.8000 11-Apr-80 50.6000 14-Apr-80 50.3000 15-Apr-80 50.7000 16-Apr-80 50.6500 17-Apr-80 50.1000 18-Apr-80 50.1300 21-Apr-80 50.1000 22-Apr-80 50.1500 23-Apr-80 49.9000 24-Apr-80 49.7500 25-Apr-80 49.8000 28-Apr-80 49.3000 29-Apr-80 49.3500 30-Apr-80 49.4000 1-May-80 49.5000 2-May-80 49.5000 5-May-80 49.6000 6-May-80 49.3800 7-May-80 49.0500 8-May-80 49.3000 9-May-80 49.4000 12-May-80 49.3000 13-May-80 49.2500 14-May-80 49.0000 15-May-80 49.6000 16-May-80 49.5500 19-May-80 49.4500 20-May-80 49.4300 21-May-80 49.3000 22-May-80 49.1000 23-May-80 49.0000 26-May-80 ND 27-May-80 48.8500 28-May-80 48.9500 29-May-80 48.9300 30-May-80 49.1500 2-Jun-80 48.8800 3-Jun-80 49.1500 4-Jun-80 49.0000 5-Jun-80 49.0000 6-Jun-80 49.0000 9-Jun-80 48.8500 10-Jun-80 48.8500 11-Jun-80 48.9500 12-Jun-80 49.0000 13-Jun-80 48.7800 16-Jun-80 48.8500 17-Jun-80 49.0000 18-Jun-80 48.9300 19-Jun-80 49.1000 20-Jun-80 49.0300 23-Jun-80 49.0000 24-Jun-80 49.0700 25-Jun-80 49.0300 26-Jun-80 49.0000 27-Jun-80 48.9700 30-Jun-80 48.8500 1-Jul-80 48.9800 2-Jul-80 48.9500 3-Jul-80 48.9800 4-Jul-80 ND 7-Jul-80 48.6700 8-Jul-80 48.6000 9-Jul-80 48.6000 10-Jul-80 48.6000 11-Jul-80 48.7800 14-Jul-80 48.7200 15-Jul-80 48.7500 16-Jul-80 48.7600 17-Jul-80 48.6500 18-Jul-80 48.8200 21-Jul-80 48.8000 22-Jul-80 48.7700 23-Jul-80 48.7300 24-Jul-80 48.7300 25-Jul-80 48.8000 28-Jul-80 48.8000 29-Jul-80 49.1000 30-Jul-80 49.4500 31-Jul-80 49.9500 1-Aug-80 49.9500 4-Aug-80 49.6500 5-Aug-80 48.6000 6-Aug-80 49.3300 7-Aug-80 49.4000 8-Aug-80 49.5500 11-Aug-80 49.5700 12-Aug-80 49.5700 13-Aug-80 49.4200 14-Aug-80 49.5500 15-Aug-80 49.6200 18-Aug-80 49.7500 19-Aug-80 49.8300 20-Aug-80 49.7200 21-Aug-80 49.8000 22-Aug-80 49.8500 25-Aug-80 49.9000 26-Aug-80 48.9800 27-Aug-80 49.8800 28-Aug-80 49.8300 29-Aug-80 49.7800 1-Sep-80 ND 2-Sep-80 48.5500 3-Sep-80 49.5500 4-Sep-80 49.5200 5-Sep-80 49.6300 8-Sep-80 49.6000 9-Sep-80 49.5000 10-Sep-80 49.5600 11-Sep-80 49.5500 12-Sep-80 49.5600 15-Sep-80 49.7500 16-Sep-80 49.8000 17-Sep-80 49.7000 18-Sep-80 49.8500 19-Sep-80 50.0000 22-Sep-80 49.9800 23-Sep-80 50.2500 24-Sep-80 50.0200 25-Sep-80 50.0500 26-Sep-80 50.1700 29-Sep-80 50.2500 30-Sep-80 50.1800 1-Oct-80 50.1000 2-Oct-80 50.1800 3-Oct-80 50.3000 6-Oct-80 50.0000 7-Oct-80 50.2500 8-Oct-80 50.2000 9-Oct-80 50.2000 10-Oct-80 50.1500 13-Oct-80 ND 14-Oct-80 50.2000 15-Oct-80 50.5500 16-Oct-80 50.3000 17-Oct-80 50.5500 20-Oct-80 50.6500 21-Oct-80 50.8000 22-Oct-80 50.8000 23-Oct-80 50.8200 24-Oct-80 50.9300 27-Oct-80 51.1200 28-Oct-80 51.3000 29-Oct-80 51.3000 30-Oct-80 51.4000 31-Oct-80 51.6000 3-Nov-80 52.0000 4-Nov-80 ND 5-Nov-80 52.0000 6-Nov-80 51.9500 7-Nov-80 52.3000 10-Nov-80 52.2500 11-Nov-80 ND 12-Nov-80 51.7500 13-Nov-80 51.7500 14-Nov-80 51.9000 17-Nov-80 52.2000 18-Nov-80 52.2000 19-Nov-80 51.9000 20-Nov-80 52.1800 21-Nov-80 52.5000 24-Nov-80 52.3000 25-Nov-80 52.3500 26-Nov-80 52.3500 27-Nov-80 ND 28-Nov-80 52.5500 1-Dec-80 52.9000 2-Dec-80 52.7500 3-Dec-80 52.6500 4-Dec-80 52.7000 5-Dec-80 53.0000 8-Dec-80 52.9500 9-Dec-80 53.1800 10-Dec-80 53.6500 11-Dec-80 53.9500 12-Dec-80 53.7000 15-Dec-80 53.3000 16-Dec-80 53.9500 17-Dec-80 53.8500 18-Dec-80 53.7500 19-Dec-80 53.7000 22-Dec-80 53.3500 23-Dec-80 53.1500 24-Dec-80 53.0500 25-Dec-80 ND 26-Dec-80 53.1000 29-Dec-80 53.1500 30-Dec-80 53.0000 31-Dec-80 53.2000 1-Jan-81 ND 2-Jan-81 53.3500 5-Jan-81 53.0000 6-Jan-81 52.5500 7-Jan-81 52.7000 8-Jan-81 53.1500 9-Jan-81 53.1400 12-Jan-81 53.1500 13-Jan-81 53.7000 14-Jan-81 53.5800 15-Jan-81 53.7000 16-Jan-81 53.9000 19-Jan-81 53.5800 20-Jan-81 53.7300 21-Jan-81 53.5200 22-Jan-81 53.8000 23-Jan-81 54.2500 26-Jan-81 54.3500 27-Jan-81 54.6500 28-Jan-81 55.0000 29-Jan-81 55.3000 30-Jan-81 55.7500 2-Feb-81 55.5000 3-Feb-81 56.4000 4-Feb-81 55.7500 5-Feb-81 56.1500 6-Feb-81 56.5000 9-Feb-81 56.0500 10-Feb-81 56.1000 11-Feb-81 56.1000 12-Feb-81 ND 13-Feb-81 57.1000 16-Feb-81 ND 17-Feb-81 57.2000 18-Feb-81 56.9000 19-Feb-81 56.8000 20-Feb-81 56.3000 23-Feb-81 56.3500 24-Feb-81 56.1500 25-Feb-81 56.2500 26-Feb-81 56.8500 27-Feb-81 57.3000 2-Mar-81 57.5000 3-Mar-81 57.9000 4-Mar-81 56.8500 5-Mar-81 57.0500 6-Mar-81 57.2300 9-Mar-81 57.1000 10-Mar-81 56.8500 11-Mar-81 56.7500 12-Mar-81 56.7500 13-Mar-81 56.7500 16-Mar-81 56.5500 17-Mar-81 56.4500 18-Mar-81 55.8800 19-Mar-81 55.6000 20-Mar-81 56.0500 23-Mar-81 56.5500 24-Mar-81 56.5500 25-Mar-81 56.4200 26-Mar-81 56.5500 27-Mar-81 57.4000 30-Mar-81 57.0500 31-Mar-81 56.8000 1-Apr-81 56.7500 2-Apr-81 56.8000 3-Apr-81 57.3500 6-Apr-81 58.0500 7-Apr-81 58.0000 8-Apr-81 57.5000 9-Apr-81 57.7500 10-Apr-81 57.8500 13-Apr-81 58.4000 14-Apr-81 58.1500 15-Apr-81 58.4000 16-Apr-81 58.7000 17-Apr-81 58.7500 20-Apr-81 58.3000 21-Apr-81 58.6000 22-Apr-81 58.5000 23-Apr-81 58.4500 24-Apr-81 58.6000 27-Apr-81 58.5500 28-Apr-81 58.7500 29-Apr-81 59.2000 30-Apr-81 59.4500 1-May-81 59.6000 4-May-81 59.4000 5-May-81 60.3000 6-May-81 60.0000 7-May-81 60.3000 8-May-81 60.0000 11-May-81 60.5000 12-May-81 60.6700 13-May-81 60.7000 14-May-81 61.2000 15-May-81 61.0000 18-May-81 60.9000 19-May-81 60.7500 20-May-81 60.7500 21-May-81 62.2500 22-May-81 61.2000 25-May-81 ND 26-May-81 61.5500 27-May-81 61.9000 28-May-81 61.6000 29-May-81 61.4500 1-Jun-81 61.5000 2-Jun-81 62.5000 3-Jun-81 62.3000 4-Jun-81 64.1500 5-Jun-81 63.8000 8-Jun-81 63.6000 9-Jun-81 63.1000 10-Jun-81 63.1500 11-Jun-81 63.3000 12-Jun-81 63.3500 15-Jun-81 62.8500 16-Jun-81 62.4500 17-Jun-81 60.2500 18-Jun-81 62.6000 19-Jun-81 63.2500 22-Jun-81 62.9000 23-Jun-81 62.6500 24-Jun-81 62.8500 25-Jun-81 63.1000 26-Jun-81 63.6500 29-Jun-81 63.2000 30-Jun-81 63.5000 1-Jul-81 64.1000 2-Jul-81 64.1200 3-Jul-81 64.0000 6-Jul-81 64.5500 7-Jul-81 64.4500 8-Jul-81 64.9000 9-Jul-81 64.7500 10-Jul-81 64.6000 13-Jul-81 64.4000 14-Jul-81 65.0000 15-Jul-81 64.2000 16-Jul-81 64.4500 17-Jul-81 64.6000 20-Jul-81 65.0500 21-Jul-81 65.2000 22-Jul-81 65.2000 23-Jul-81 65.0000 24-Jul-81 65.2000 27-Jul-81 65.1000 28-Jul-81 65.3500 29-Jul-81 65.3500 30-Jul-81 65.7000 31-Jul-81 65.5500 3-Aug-81 66.3000 4-Aug-81 66.5000 5-Aug-81 66.5000 6-Aug-81 66.5500 7-Aug-81 67.2000 10-Aug-81 67.6000 11-Aug-81 67.8000 12-Aug-81 67.0000 13-Aug-81 66.9000 14-Aug-81 67.2000 17-Aug-81 67.2500 18-Aug-81 66.5500 19-Aug-81 66.4500 20-Aug-81 66.2000 21-Aug-81 66.1000 24-Aug-81 65.9000 25-Aug-81 67.0000 26-Aug-81 66.5500 27-Aug-81 66.2500 28-Aug-81 66.3500 31-Aug-81 66.0000 1-Sep-81 66.3500 2-Sep-81 66.0000 3-Sep-81 65.7500 4-Sep-81 65.7000 7-Sep-81 ND 8-Sep-81 66.0000 9-Sep-81 66.1000 10-Sep-81 65.9500 11-Sep-81 65.8500 14-Sep-81 66.2000 15-Sep-81 66.7000 16-Sep-81 66.0000 17-Sep-81 64.7500 18-Sep-81 64.7000 21-Sep-81 63.6000 22-Sep-81 64.7500 23-Sep-81 64.5000 24-Sep-81 65.3000 25-Sep-81 65.4000 28-Sep-81 65.7000 29-Sep-81 65.1000 30-Sep-81 65.1500 1-Oct-81 65.3000 2-Oct-81 64.7000 5-Oct-81 64.9000 6-Oct-81 64.3000 7-Oct-81 64.0000 8-Oct-81 64.0000 9-Oct-81 63.3000 12-Oct-81 ND 13-Oct-81 63.6000 14-Oct-81 64.0000 15-Oct-81 63.9000 16-Oct-81 64.5000 19-Oct-81 64.6000 20-Oct-81 64.3000 21-Oct-81 65.2000 22-Oct-81 65.0500 23-Oct-81 65.2500 26-Oct-81 66.0000 27-Oct-81 65.9000 28-Oct-81 65.6500 29-Oct-81 65.6500 30-Oct-81 64.6000 2-Nov-81 64.3000 3-Nov-81 ND 4-Nov-81 64.2000 5-Nov-81 64.3000 6-Nov-81 64.6000 9-Nov-81 63.8500 10-Nov-81 64.4500 11-Nov-81 ND 12-Nov-81 64.1500 13-Nov-81 64.3500 16-Nov-81 64.3000 17-Nov-81 64.3500 18-Nov-81 64.4500 19-Nov-81 64.3000 20-Nov-81 64.5000 23-Nov-81 64.8500 24-Nov-81 64.4000 25-Nov-81 64.3500 26-Nov-81 ND 27-Nov-81 64.8000 30-Nov-81 64.2500 1-Dec-81 64.2000 2-Dec-81 64.5500 3-Dec-81 64.3500 4-Dec-81 64.5000 7-Dec-81 64.4000 8-Dec-81 64.6500 9-Dec-81 64.6000 10-Dec-8