Year	DOD, current US$
1977	99614.9
1978	0
1979	0
1980	165317.1
1981	44619.4
1982	0
1983	0
1984	16191
1985	0
1986	0
1987	0
1988	102683.1
1989	32110
1990	2293062.5
1991	4341237.8
1992	2233388.1
1993	2211330.9
1994	1784804.9
1995	841077.7
1996	57946.8
1997	0
1998	0
1999	0
2000	0
2001	0
2002	0
2003	0
2004	0
2005	0
2006	0
2007	0
2008	0
2009	1302232000
2010	1485397000
2011	1719835000
2012	2919205987.5
2013	2902407561.2
2014	5344393481.1
2015	4751752031.7
2016	4626922145.9
2017	5240584949.4
2018	4855145000
2019	5712049807
2020	6266945628.7
2021	7414473503.3
2022	8318316048