The American Presidency Project
访问日期： 01 九月, 2016
• compiled by Gerhard Peters from "Historical Tables, Budget of the United States Government, Fiscal Year 2013" (Washington, D.C.: Government Printing Office, 2012).
• 1789 - 1945 (Roosevelt) data from Lyn Ragsdale, "Vital Statisitcs on the Presidency: Washington to Clinton." rev. ed. (Washington, D.C.: CQ Press, 1998); data compiled by John Woolley, The American Presidency Project; and figures from the National Archives and Records Administration.
• 1945 (Truman) - present data compiled by Gerhard Peters, The American Presidency Project, from documents contained in the Federal Register.