Year	PPG (DOD, current US$)
1978	3873272.5
1979	6798706.2
1980	24763273.8
1981	36885616.1
1982	42069558.1
1983	48220826.7
1984	49809472.5
1985	49065918.7
1986	58684985.3
1987	61836720
1988	59359561.4
1989	54400308.7
1990	63964852.9
1991	78042507.1
1992	90518973.9
1993	109329106.8
1994	122524561.1
1995	151916795.9
1996	163535228.4
1997	164332186.7
1998	183399922.6
1999	194051953.3
2000	184655269.7
2001	180672875.5
2002	222462946.8
2003	258500425.4
2004	306798432.5
2005	299765075.1
2006	354275657
2007	416436276.1
2008	469894852.8
2009	542716127.9
2010	627808485.7
2011	675194502.3
2012	720029097
2013	874664509.8
2014	747031126.1
2015	685301024
2016	911809213.8
2017	1234062844.1
2018	2003889258.5
2019	2228149665.4
2020	2853450470.3
2021	3134621187.1
2022	3067454821