Year	PPG (DOD, current US$)
1970	328182548.1
1971	438918171.3
1972	509598164.6
1973	615029705.3
1974	724051757.8
1975	755138605.8
1976	801414101.1
1977	840814099.4
1978	952886706
1979	1021071958.6
1980	1023695509.1
1981	1256540871.5
1982	1237823841.3
1983	1211284121.2
1984	1128617730
1985	1300852272.7
1986	1630285041.6
1987	1891153947.5
1988	2037876944.1
1989	1958820570.1
1990	2197411267.7
1991	2334643266.2
1992	2406876424.7
1993	2582789756.2
1994	2822451671.1
1995	2944843793.3
1996	2952188189.6
1997	2979025896.7
1998	3123122952.3
1999	2769487285.1
2000	2643235460.9
2001	2561815892.7
2002	2725244619
2003	2946467711.2
2004	2998667275.3
2005	2811631943.9
2006	2934716639.9
2007	3076956225
2008	2972836309.2
2009	2989579012.9
2010	2924877090.8
2011	2959959466.2
2012	1025169007.5
2013	1332247759.2
2014	1453317582.8
2015	1594119004.8
2016	1764293564.9
2017	1859823608.5
2018	1989128482.5
2019	2865208346.5
2020	3290676760.1
2021	3498244983.1
2022	3685950422.6