Year	PPG (DOD, current US$)
1970	311217589.6
1971	370049468.9
1972	579940697.1
1973	910323029.2
1974	1349128270.7
1975	1726400662.4
1976	2380271246.6
1977	3005348103.7
1978	3686892163.4
1979	3618848322.3
1980	4071562244.7
1981	4224367345.3
1982	4072073750.8
1983	4433545094
1984	4284267497
1985	4958299367.3
1986	5917446891.8
1987	7199696301.8
1988	6933437389.8
1989	7969841403.2
1990	8986138793
1991	9277108620.9
1992	8952842864.2
1993	8773163934.6
1994	9286069001.9
1995	9627935985.5
1996	9267681404
1997	8620795783.6
1998	9206638078.1
1999	8254465348.4
2000	7872312286.1
2001	7578655685.6
2002	8837570841.3
2003	10135237153.2
2004	10108494554.3
2005	9395539745.6
2006	9856831932.3
2007	10897927315.3
2008	11755488738.4
2009	11873413792.3
2010	4582531070.8
2011	4082155094.4
2012	4288259166.9
2013	4719138953.2
2014	4780282224.1
2015	4733926906.8
2016	4486604587.2
2017	4682322073
2018	4777968385.4
2019	4975641767.3
2020	5212070159.3
2021	5413876661.1
2022	5351434062.6