Year	PPG (DOD, current US$)
1970	20789505.9
1971	23598002.3
1972	20015915.3
1973	31067227.5
1974	47354443.4
1975	62537911.1
1976	85306252
1977	134283149.6
1978	179146283.6
1979	246230060.8
1980	280711178.4
1981	279681119.5
1982	307029883.7
1983	358082422.9
1984	369256869.1
1985	456166856.7
1986	576716543
1987	744114403.2
1988	767369530.6
1989	648150964.3
1990	749566804.9
1991	882637541.1
1992	978860621.5
1993	1068209465.3
1994	1046309728
1995	1143325281.2
1996	1166830714.3
1997	1149510076.5
1998	1298834761
1999	1371243390.6
2000	1237620632.3
2001	1324208055.5
2002	1414004956.4
2003	1605073795
2004	1791114464.3
2005	1872133149
2006	1004777837.3
2007	1269493328.6
2008	1516989556.1
2009	1737330153.8
2010	1960461925
2011	2104268099.6
2012	2282529601.2
2013	2327931077.4
2014	2314076557.8
2015	2382802029.8
2016	2570350404.2
2017	2873096677.6
2018	3041489067.1
2019	3371783750.1
2020	4018501222.3
2021	4327682381.4
2022	4385246053.6