Year	PPG (DOD, current US$)
1970	324072108.9
1971	356828839.7
1972	386011687.8
1973	441490376.2
1974	512893354.9
1975	616117539
1976	822733646.1
1977	1101738218.2
1978	1746880871.9
1979	2695023459.9
1980	3943306277.6
1981	5017005799.5
1982	6033753228.4
1983	6901743100.3
1984	7186415597.7
1985	9853924520.6
1986	11520154415.2
1987	13911921228.4
1988	13285289636.6
1989	12512520594.3
1990	12530932572.7
1991	13309405224.6
1992	13362975860.1
1993	14775865061.2
1994	16265779733.3
1995	16880501586
1996	16929031380.9
1997	22323906125.7
1998	28114389780.3
1999	31322985370.3
2000	29462359755.9
2001	26217650575.9
2002	22533779816.3
2003	17711636377.1
2004	14910663157.9
2005	12659976733.5
2006	10909626376.5
2007	9317516715
2008	9948606321.6
2009	10774987111.1
2010	16736879168.2
2011	22696667676.6
2012	29443975734.4
2013	27988520967.7
2014	26101913450.9
2015	22577309168.1
2016	23498664451.1
2017	30888818003.8
2018	37508715169.8
2019	41187010349.3
2020	36127189918.2
2021	36816971678.9
2022	35979176192.3