Transportation & Public Utilities Productivity: Output per hour of all persons, by industry /1 Local Electric, & interurban gas, & Transp. Railroad passenger Trucking Water Air Pipelines Transp. Communi- sanitary & public. transp. transit & warehousing transp. transp. ex nat. gas services cations serivces utilities Transp. SIC 40 SIC 41 SIC 42 SIC 44 SIC 45 SIC 46 SIC 47 SIC 48 SIC 49 --------- ------- -------- ------------ ------------- ------- ------- ----------- -------- -------- --------- 1977 37.70 24.79 13.17 16.25 30.01 37.07 23.25 178.41 30.94 36.41 92.98 1978 37.48 24.53 14.25 15.58 27.95 35.86 26.36 115.02 30.68 38.61 87.82 1979 37.48 24.72 14.39 15.95 27.75 35.07 26.11 138.81 30.51 39.72 84.14 1980 38.61 25.05 15.63 17.26 28.21 35.41 23.99 117.02 30.08 42.58 82.40 1981 39.31 24.80 16.47 16.65 26.38 36.15 23.79 132.75 30.83 44.33 82.83 1982 39.24 25.67 16.66 14.92 26.76 37.56 27.74 157.15 30.90 44.42 75.65 1983 42.33 28.50 21.03 15.98 29.80 36.35 32.09 154.86 31.61 49.02 77.15 1984 42.15 28.25 22.97 18.29 29.51 34.80 29.85 159.22 30.89 48.34 80.73 1985 41.06 26.63 23.84 17.63 27.47 33.76 26.20 156.35 29.63 49.69 79.49 1986 40.97 27.21 28.25 18.06 25.96 34.47 29.85 134.50 30.02 49.69 77.67 1987 42.66 26.56 30.92 16.54 23.72 33.22 31.14 166.08 29.14 56.13 84.39 1988 43.82 25.80 33.90 15.89 21.98 32.27 31.89 158.38 28.66 60.58 91.31 1989 43.37 25.02 31.79 16.09 21.68 31.86 29.12 160.12 28.74 61.17 90.90 1990 43.90 24.92 33.91 15.45 21.01 31.17 30.29 132.72 28.19 63.13 92.92 1991 46.38 26.73 41.42 15.57 22.71 31.81 31.91 148.31 28.74 67.55 93.78 1992 47.34 27.34 44.12 15.54 22.97 31.56 35.00 139.31 28.28 70.95 94.48 1993 48.22 27.93 47.93 14.94 24.16 31.78 33.15 161.57 28.64 73.17 97.27 1994 48.62 27.33 51.52 14.27 22.32 31.25 35.06 172.09 28.58 77.32 103.78 /1 Output is chained 1992 dollar gross product originating by industry published by the Bureau of Economic Analysis (BEA) in Table 14 (page 154) of the August 1996. Hours of all persons are constructed by assuming that self-employed workers work the same number of hours annually as full-time employees. Annual hours of full-time employees are constructed by dividing hours worked by full-time and part-time employees by the number of full-time-equivalent employees. Self-employed workers are constructed by subtracting full-time-equivalent employees from persons engaged in production. See Tables 6.5c, 6.8c, 6.9c in the National Income and Product Accounts. Data for 1987 to 1994 are reported using 1987 SIC definitions; data for 1977 to 1986 are reported using 1972 SIC definitions. Productivity levels in the earlier period are adjusted by setting the 1987 levels of productivity equal for the two definitions. Where the two sets of SIC codes were not comparable, we followed BEAs instructions and merged series. These are indicated by footnotes. Finally, there are some series breaks for the number of self-employed workers in the two-digit industries between 1991 and 1992.