Year-end level from annual financial statements compiled by and purchased from SNL Financial. Staff tabulation of U.S. Treasury securities from Schedule D, book value plus short-term U.S. government bonds reported on Schedule DA--Part 1, book value. Levels for other quarters estimated from staff tabulation of quarterly statement, table Assets, percentage of line 1, Bonds plus percentage of Schedule DA--Part 1, total short-term investments. Percentage on bonds used is FOF Section estimate based on distribution of annual bond data, and percentage of short-term investments used is FOF Section estimate based on distribution of annual short-term investment data. Unadjusted flow is the change in the level; data for the most recent ten years show no significant seasonality.
