Year	PPG (DOD, current US$)
1970	4084800
1971	4338910
1972	5068965.7
1973	4825894.4
1974	5274044.5
1975	4827053
1976	9165985.1
1977	13669097.4
1978	22312767.1
1979	33830514.1
1980	47043521.2
1981	56060896.7
1982	62401515.9
1983	75076085.2
1984	76097120
1985	94382711
1986	98298573.4
1987	111046109.7
1988	119008558.3
1989	128817922.6
1990	136234642.3
1991	151020042.6
1992	169966603.7
1993	175618100.5
1994	182448049.2
1995	219438788.4
1996	250451682.2
1997	268076458.6
1998	282940184.2
1999	341019291.4
2000	556589197
2001	648647744.6
2002	779301528.2
2003	954156887.2
2004	936756577.4
2005	990731204.9
2006	1019586984
2007	1039945812
2008	1021346555.1
2009	1036856715.9
2010	1018915831.7
2011	1014198645.3
2012	984734605.8
2013	1052738470.7
2014	1101355305.1
2015	1153490893.8
2016	1176748499.2
2017	1230933304.1
2018	1259676958.3
2019	1285549805.7
2020	1408403247.8
2021	1276447825.9
2022	1299417198.6