Year	PPG (DOD, current US$)
1970	871385671.3
1971	1028918127.3
1972	1072907621.7
1973	1157683146.5
1974	1357084493
1975	2442528434.8
1976	2919911158.6
1977	4740940572.8
1978	5963179652.2
1979	7067039187.2
1980	8337547338.5
1981	8990053289.6
1982	10103417296
1983	10607903168.8
1984	11520256211.7
1985	13379351562.2
1986	15860269733.7
1987	18843511584
1988	19592169326
1989	20902526263.5
1990	23669476892.2
1991	21430097611.1
1992	21657697857.3
1993	21336047130.7
1994	22359605254.2
1995	23204230964.6
1996	22405525190.8
1997	20388462411.5
1998	20697447885
1999	18820511713.9
2000	17243286058.9
2001	15350630431.1
2002	14372364907.5
2003	14464039516.2
2004	14169198050.6
2005	12448968515
2006	13547999400.4
2007	15703080099.6
2008	16585856009.3
2009	19280765146
2010	21095434450
2011	22435856476.4
2012	25148077126.8
2013	28300824553.6
2014	30141748195.2
2015	31127408315.3
2016	31431509893.9
2017	34766155182.2
2018	33484551559.3
2019	36492740903.7
2020	43651823183.2
2021	42107977350.5
2022	41063874196.9