Year	PPG (DOD, current US$)
1970	90822382.2
1971	127538293.9
1972	200636306.8
1973	346230224.3
1974	462014042.9
1975	771643164.9
1976	1079281993
1977	1255400117.3
1978	1288897017.9
1979	1461524196.9
1980	1271492888.9
1981	975288589.4
1982	817323472.4
1983	679888848.2
1984	668336300.7
1985	944156735.6
1986	1430907856.7
1987	2152492627.7
1988	2300736619.1
1989	2610611980.6
1990	3150161028
1991	3224539550.3
1992	3049231870.6
1993	2934412123.9
1994	3696388258.2
1995	3978781538.6
1996	3974742386.8
1997	3669448155
1998	3839063694.5
1999	3298826096.4
2000	3467386262.9
2001	3053748529
2002	3200579835.6
2003	3403687880.6
2004	3806604162.8
2005	3649071942.3
2006	3862344977.6
2007	4638070686.1
2008	2350171198.7
2009	2377758628.9
2010	2518584007.3
2011	2772671264.9
2012	2904445631.1
2013	4323903683.5
2014	4361052201
2015	4713949097.6
2016	4926307874.7
2017	5925504207.8
2018	6070089625.8
2019	6172103325.9
2020	6557110577.1
2021	6361810087.6
2022	6150122686.7