Year	PPG (DOD, current US$)
1981	14328422
1982	20321009.3
1983	27633669.8
1984	41032178.4
1985	48608420.9
1986	51834138.2
1987	63702557.9
1988	65181768.9
1989	72179124.5
1990	83048532.8
1991	90295835.4
1992	90775407.8
1993	94252814.3
1994	90196402.5
1995	96402573.8
1996	100027756.8
1997	92864586.8
1998	95991269.3
1999	114531130.5
2000	163554633.4
2001	210133915.8
2002	218947142.1
2003	224771350.7
2004	244648126.5
2005	241254953.3
2006	235938849.4
2007	232939635.2
2008	221911559.8
2009	217933286.6
2010	235618826.2
2011	247580583.5
2012	272668462.2
2013	280436286.3
2014	281789388.7
2015	285163451.7
2016	267117680.4
2017	264476043.5
2018	242802271.4
2019	245665100.9
2020	275640731.3
2021	312351646.4
2022	337803656.4