Year	PPG (DOD, current US$)
1970	26315139.8
1971	38914520.6
1972	55798535.3
1973	104930493.6
1974	167681729.4
1975	188027357.6
1976	392726191.3
1977	458945927.5
1978	588190125.3
1979	618302407.6
1980	709847380
1981	802919866.5
1982	968618482.6
1983	1103824567.8
1984	1144287967.2
1985	1300434592.9
1986	1573225525.5
1987	1820245416.6
1988	1799480662.2
1989	1736141782.4
1990	1803087510.7
1991	1833514030.6
1992	1838924180.5
1993	1933563165.3
1994	2022978858.6
1995	2124121381.8
1996	2166323794.8
1997	2075282046.4
1998	2048537508.5
1999	2103592556.6
2000	1984572800.6
2001	1891629255.5
2002	1894921819.4
2003	2024264991.2
2004	2031854742.4
2005	2030089217.3
2006	1315760619.5
2007	1437453151
2008	1670429330.6
2009	1988972645.7
2010	2325934476.3
2011	2565501495
2012	3021411169.4
2013	3246738811.9
2014	3296507270.4
2015	3711550084.1
2016	3865182891.7
2017	4001766332.5
2018	3950553319.4
2019	4044105360.9
2020	4217123823.6
2021	4038488838.4
2022	3841114972.2