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(Percentage of gross domestic product)
1971
1976
1981
1986
1991
1996
2001
2006
2011
2016
2021
0
14
16
18
20
22
24
26
28
0
14
16
18
20
22
24
26
28
Average Outlays,
1971 to 2010
Outlays
Average Revenues,
1971 to 2010
Actual
Projected
Revenues
CBO's Estimate of the
President's Budget
CBO's Baseline Projection
CBO's Estimate of the
President's Budget