Year	PPG (DOD, current US$)
1970	485146240.2
1971	488437476.9
1972	510135605.2
1973	504986847.3
1974	746515764.2
1975	774170433.7
1976	173219589
1977	716425342.6
1978	279245038.8
1979	582612686.8
1980	917719041.1
1981	1404550741.3
1982	1662581882.8
1983	1695675802.2
1984	1862009333.8
1985	2226835961.4
1986	2638490570.4
1987	3303093651.1
1988	3333661420.3
1989	3142470382.8
1990	3334715145.8
1991	3518797841.2
1992	3468960417.1
1993	3316197152.1
1994	3536625747.1
1995	3705661331.8
1996	3551968305.1
1997	3875043020.9
1998	4106358238
1999	4368855719.6
2000	4295312307
2001	3793455599.6
2002	4136688764.3
2003	4622290060.8
2004	3493184535.2
2005	3186621222.9
2006	1248486054.6
2007	1459878075.7
2008	1770131495.2
2009	1894940911.6
2010	2038908457.9
2011	2151223846
2012	2249040981
2013	2331456738.5
2014	2405600956.4
2015	2509947478.7
2016	2466564930.6
2017	2736287305.7
2018	2900669535.5
2019	3116962245.3
2020	3508113284.7
2021	3715444279.6
2022	3934237781