Year	PPG (DOD, current US$)
1970	623521836.3
1971	633825763
1972	677269149.4
1973	704607624.2
1974	808254084
1975	1141219401.5
1976	1294590442.1
1977	1398608449.5
1978	1460303801.5
1979	1811342334.4
1980	2132206996.4
1981	2168767680.2
1982	2289709720.3
1983	2500314905.4
1984	2543907151.1
1985	3016525693.4
1986	3735388719.6
1987	4341683368.2
1988	4315185045
1989	4103445455.8
1990	4541136917.5
1991	4694782001.8
1992	4506203878.5
1993	4391270795.3
1994	5180462915.9
1995	5290763817.7
1996	5369174780.2
1997	5251475347.6
1998	5326311136.3
1999	4505435570.8
2000	4443649851
2001	4826635975.2
2002	5255583478.1
2003	5572569114.7
2004	5841212795.7
2005	3850813406
2006	861758139.9
2007	1025217942.8
2008	1099594146.7
2009	1153599364.7
2010	1311798932.6
2011	2065334096
2012	3551324553
2013	4070352473.3
2014	5571519337.9
2015	7331885226.4
2016	7929086033
2017	9919811953.9
2018	11403095542
2019	13525309949.9
2020	15502292621.6
2021	15673218048.5
2022	16128647583.7