Year	PPG (DOD, current US$)
1970	293685880.5
1971	326481432
1972	360568728.3
1973	453406911.6
1974	895752846.1
1975	1250817492.3
1976	1657146802.7
1977	2038643520.4
1978	2407749701.2
1979	3261281358
1980	3822271061
1981	4505308004
1982	5424315438.2
1983	5837586547.9
1984	6190998606.3
1985	6601653519.3
1986	7121517690.9
1987	8043181154.9
1988	8002750772.2
1989	8468902717.8
1990	9155214430.9
1991	9220052624.1
1992	8983624032.7
1993	8993766112.5
1994	9399864856.2
1995	9779426422.4
1996	9369226115.9
1997	8998225165.4
1998	9225862495.3
1999	8853335976.2
2000	10161543362.1
2001	10075366773
2002	10673141253.9
2003	11234722783.4
2004	11721125092.5
2005	11308121818.8
2006	12015505135.9
2007	12913373006.6
2008	13307926743.2
2009	13895629412.1
2010	14637724839.5
2011	15288269758.4
2012	15874516711.5
2013	16561484772.5
2014	16051572637.3
2015	15945747011.8
2016	15690462172.9
2017	15985817713.9
2018	15762453900.7
2019	16794169115.7
2020	17084401092.9
2021	15611317636.2
2022	15253037017.4