Year	PPG (DOD, current US$)
1970	229163360
1971	233702350.7
1972	213774088.6
1973	217482194.3
1974	217428044
1975	186854615.4
1976	143900096.4
1977	153462732
1978	418075279.6
1979	524236734.4
1980	695615492.4
1981	805051748
1982	1212892580.4
1983	1432342233.1
1984	1512938145.8
1985	1794113277.1
1986	2066841939.6
1987	2443161463.8
1988	2290888835.8
1989	2339056836.7
1990	2535369100.7
1991	2691251716.7
1992	2945785871.6
1993	3115775171.1
1994	3435457681.9
1995	3537100682
1996	3394456520.6
1997	3134636510
1998	3268844588.2
1999	3056519965.8
2000	2846195695.6
2001	2752761057.3
2002	3080839519.4
2003	3429548664.1
2004	3605471538.3
2005	3257593927.4
2006	3452611137.1
2007	3785072220.1
2008	3744027035.7
2009	3870395194.8
2010	3800256068.4
2011	3879420593.7
2012	4091886457.8
2013	4141576560.4
2014	3996907493.9
2015	4189465426.5
2016	4231003193
2017	4332810777.2
2018	4321204642.8
2019	4406831608.5
2020	4617834312.8
2021	4637422762.9
2022	4728214672.2