Year	PPG (DOD, current US$)
1977	2183745.2
1978	10315766.6
1979	14719040.6
1980	23460544.5
1981	29421443.2
1982	36835228.9
1983	42774839.4
1984	53884975.6
1985	61873070.4
1986	76751882.9
1987	91128488.8
1988	100798565.7
1989	113347627.7
1990	132866555.3
1991	150401298.9
1992	169131840.5
1993	181898197.1
1994	201237330.6
1995	231840412.8
1996	226526919
1997	226848348.7
1998	243630765.6
1999	291077548.1
2000	278284987.9
2001	283158377.4
2002	301183797
2003	320825223.6
2004	340412287.6
2005	317134347.8
2006	331430370.5
2007	143464681.1
2008	108747368.5
2009	124976251.3
2010	145303682.8
2011	188229647.6
2012	166643442.9
2013	180782244.6
2014	198459847.6
2015	216225376.2
2016	221523971.5
2017	242460792.6
2018	223277728.7
2019	240699147.7
2020	256448886.1
2021	249422828
2022	309097485.2