Year	PPG (DOD, current US$)
1970	1172240.8
1971	1238316
1972	1506741.7
1973	1691961.4
1974	4294057.5
1975	4721546
1976	18486295.3
1977	23395332.8
1978	27995279.3
1979	38455347.1
1980	42975472.9
1981	52800843.4
1982	67834926.1
1983	83632329.9
1984	101544386.8
1985	129648522.8
1986	158861184.2
1987	188184258.8
1988	188820740.6
1989	161903916.5
1990	172430840.2
1991	165662112.9
1992	174867051.7
1993	169889277.5
1994	184032550.8
1995	195593274.6
1996	208304454.2
1997	205621810.8
1998	214394740.1
1999	208544858.8
2000	201751874.3
2001	217100297.2
2002	239620276.1
2003	261258547.2
2004	269161663.7
2005	253858778.7
2006	256013134.9
2007	274908703.8
2008	264357820.5
2009	258575325.7
2010	248519996.8
2011	243307922.6
2012	220195412.3
2013	108112704.9
2014	104286667.4
2015	94926719.6
2016	146923707.1
2017	154492490.6
2018	216473802.8
2019	226615381.7
2020	252885442.1
2021	285655568.8
2022	309811013.7