Year	PPG (DOD, current US$)
1970	73220144.1
1971	79710586.3
1972	96232136.6
1973	118816346.9
1974	153727755.8
1975	185008662.1
1976	241165385.1
1977	304455600
1978	384994547.7
1979	429329795.7
1980	473554458.7
1981	863100486.5
1982	981157183.6
1983	1109990066.8
1984	1199069745.4
1985	1325801189.2
1986	1465460616.8
1987	1612581231.6
1988	1640763898.9
1989	1686325974.4
1990	1802399790.6
1991	1824372862.8
1992	1783552799.2
1993	1783361890.3
1994	1825627342.9
1995	1844918988.9
1996	1809753061.9
1997	1747703624.9
1998	1787107181.5
1999	1767143260.4
2000	1730642615.5
2001	1699347303.9
2002	1766275103.4
2003	1843263406.3
2004	1855658122.5
2005	1787647930.4
2006	1828226916.9
2007	1881616532.5
2008	1878794620.3
2009	1884632426.3
2010	1878881910.7
2011	1878598214.9
2012	1870340509.2
2013	1860267126.4
2014	1799261700.8
2015	1758825813.2
2016	1743889509
2017	1787410260.5
2018	2079797182.3
2019	2077434052.5
2020	2636616867.3
2021	2341220057.5
2022	2339432364.3