Unadjusted flow from BEA, BOP, Table 6 Selected U.S. Government Transactions, line A13, Foreign currency holdings and short-term assets, net. Fourth-quarter level from BEA, IIP, Table 2, line 16, U.S. foreign currency holdings and U.S. short-term assets. Level for other quarters is obtained by adding flow to preceding level; data for the most recent ten years show no significant seasonality.