Year	PPG (DOD, current US$)
1970	16048000
1971	9107715.9
1972	8931619.7
1973	8980951.9
1974	9274607.5
1975	9577650
1976	9236862.4
1977	11666064.3
1978	15439737.4
1979	17192916.3
1980	17753106.6
1981	23742195.2
1982	36463226.8
1983	48310116
1984	47586138.6
1985	53914375.7
1986	60458320.1
1987	74877454.2
1988	80000006.1
1989	80632815.7
1990	100016760.1
1991	110854583.2
1992	105813445.4
1993	106145493.7
1994	114654191.6
1995	113517081
1996	119875817.4
1997	108660524.1
1998	108043158.6
1999	112966546.8
2000	180668392.5
2001	184755205.9
2002	294919418.1
2003	300106720.3
2004	346742454.3
2005	345175787.2
2006	408837769.5
2007	433571022.4
2008	460266617
2009	477761359.7
2010	476704201.8
2011	470557369.3
2012	472925070.9
2013	495274709.2
2014	512968160.3
2015	537390185.9
2016	551403004.5
2017	494989798.5
2018	499120727.9
2019	476006794.4
2020	497624115
2021	528612637.2
2022	536026443.4