Year	PPG (DOD, current US$)
1970	159640878.3
1971	191879724.6
1972	227172114.5
1973	366690366
1974	544388380
1975	712385573.4
1976	941384903.1
1977	988387806.9
1978	1097557880.6
1979	1208108776.2
1980	1451118149.2
1981	1747725709.2
1982	2145000474.6
1983	2504459245
1984	2686536808.8
1985	3200649518.7
1986	3337072645.9
1987	3803206559.3
1988	3810023570.9
1989	3849571763.7
1990	4054119104.4
1991	3918522944.1
1992	3942570717.8
1993	3773525464.2
1994	3772693328.8
1995	3762498348.6
1996	3242919847.7
1997	2834641385.9
1998	3037174746.7
1999	2945054025.1
2000	3819313045.9
2001	4368467466.7
2002	4662587409.1
2003	4592223984.4
2004	5293330523.7
2005	5563270526.9
2006	6150017566
2007	6759471140.9
2008	6951713813.9
2009	6724192677.9
2010	7608746446.8
2011	7767815117.9
2012	7398928417.9
2013	7451680826.8
2014	7996229905.9
2015	9648201014.4
2016	9506673571.8
2017	9929440350.7
2018	9758921430.9
2019	9407056404.3
2020	9160731514.9
2021	9008823033.1
2022	8748998140.9