Year	PPG (DOD, current US$)
1970	944513044.7
1971	1002888441.8
1972	1175623534.5
1973	1573984620.7
1974	2360537914
1975	3166823225.1
1976	3815646512.8
1977	4884188041
1978	5603290267.8
1979	6165021897.6
1980	6366130301.3
1981	6204365265.7
1982	7126637672.7
1983	8475004332.4
1984	9317318827.6
1985	9982045715.2
1986	11158179756.7
1987	12787514731.6
1988	12484117065.6
1989	12771891877.8
1990	13785716714.8
1991	15558480333.8
1992	15685273915.8
1993	16484210284.9
1994	17771566795.7
1995	19009204832
1996	20293339924
1997	19286886618.6
1998	19385898998.9
1999	19551311017.9
2000	19291383535.1
2001	18951186668.2
2002	20980055436.7
2003	23072236563.2
2004	24715384383.7
2005	22541826670.1
2006	22186694503.7
2007	19853668475.2
2008	19414502174
2009	20787578840.9
2010	20008817952
2011	20142466709.6
2012	19967846430
2013	17220533743.4
2014	15904859703.8
2015	19410853912.4
2016	19733463383.9
2017	18977870196.9
2018	18144898363.1
2019	18606069830.2
2020	28027002611.2
2021	39853652349
2022	40698849490.8