Year	PPG (DOD, current US$)
1970	3800810.8
1971	9157279.6
1972	12304770.9
1973	20103243.4
1974	27553349.5
1975	34017048.9
1976	44390615.9
1977	70256116.5
1978	79397327.2
1979	109903934.3
1980	155877038.8
1981	218602448.6
1982	283277144.4
1983	348978333.7
1984	430747467
1985	545006556.7
1986	698896515.2
1987	921856302.9
1988	1087019472.1
1989	1282188352.3
1990	1558496191.1
1991	1701299052.6
1992	1748987469.6
1993	1933201769.9
1994	2202634316.3
1995	2338651373.2
1996	2333036206.4
1997	2355269157.4
1998	2613453838
1999	2956457043
2000	2822541727.5
2001	2668832039.1
2002	2942765079.9
2003	3134793661.6
2004	3295659005.1
2005	3110051085.3
2006	3266633722.4
2007	3466533426.2
2008	3550354598.6
2009	3550285708.6
2010	3507426942
2011	3528236477.6
2012	3493093677.2
2013	3574454955.3
2014	3439771625.3
2015	3543267395.8
2016	3665275282.8
2017	4299444858.2
2018	4973775948.4
2019	5847252810.3
2020	7056712674.9
2021	7759222440.4
2022	7957200106.3