Series are zero beginning 1988:Q3. Prior to 1988:Q3, level from MTS, Table 6, schedule B-Securities Issued by Federal Agencies Under Special Financing Authorities, column Account balances, Close of this month, sum of Export-Import Bank of the U.S. and GNMA less unpublished detail on U.S. government investment account holdings of participation certificates. Transactions are calculated as the change in level. Data for the most recent ten years show no significant seasonality.
Last edited on: 10/21/2009