Unadjusted flow from BEA, BOP, Table 1 U.S. International Transactions, line 59, Other; plus an internal estimate from the IF Division for the unadjusted flow of short-term official agency- and GSE backed securities. Level from BEA, IIP, Table 2, line 30, Other; plus an internal estimate from the IF Division for the level of short-term official agency- and GSE backed securities. Data for the most recent ten years show no significant seasonality.