U.S. Government Historical Obligations by Function, 1940-1996

Note: National defense category has been adjusted to exclude nuclear weapons and infrastructure costs. Nuclear weapons costs are a combination of actual and estimated expenditures. Program totals do not match overall total because of rounding and the addition of undistributed offsetting receipts (not shown).

Sources: Atomic Audit: The Costs and Consequences of U.S. Nuclear Weapons Since 1940 (Brookings, 1998); Office of Management and Budget, Budget of the United States Government, Fiscal Year 1998, (GPO, 1997), pp. 42-49.