Year	PPG (DOD, current US$)
1970	31677128.3
1971	41560136.9
1972	54794401.3
1973	64940664.6
1974	93672792.1
1975	114173866.3
1976	132736740.7
1977	121167957.1
1978	193131219.7
1979	258581814.7
1980	385611049.9
1981	592794626.4
1982	588971525.2
1983	678871004.6
1984	696893813.3
1985	847789261.8
1986	990209528.1
1987	1198585840.3
1988	1244633675.3
1989	1077356739.3
1990	1258134316.1
1991	1169585911.8
1992	1197929747.6
1993	1242302754.7
1994	1285173784.8
1995	1346934579.4
1996	1347887135.8
1997	1340540168.1
1998	1472448248.4
1999	1486572530.1
2000	1494559616.8
2001	1444770144.8
2002	1641085484.5
2003	1920158071.8
2004	1776587373.5
2005	1748264184.5
2006	655575534.1
2007	754738772.6
2008	777213233
2009	956343895.4
2010	1205775926.5
2011	1906207931.8
2012	1525220254.2
2013	1740303419.4
2014	1736964380.8
2015	1972702215.7
2016	2236288966.9
2017	2684259599.1
2018	2804745881.7
2019	3154956371.8
2020	4006394687
2021	4238146344
2022	4636264262