Year	DOD, current US$
1972	0
1973	530584.1
1974	46012.9
1975	2024818.7
1976	3212769.1
1977	27045602.3
1978	72401604.2
1979	111149808
1980	212042930
1981	228043884
1982	209043591.5
1983	170044968.6
1984	133040477.5
1985	135053446.5
1986	125060454.5
1987	74033369
1988	49794094
1989	67532000.2
1990	155934434.8
1991	218572710.1
1992	232693084.2
1993	152837980.2
1994	194536652.7
1995	199198149.8
1996	163065470
1997	175000000
1998	149720000
1999	254290000
2000	334000000
2001	360743000
2002	572094000
2003	617000000
2004	712000000
2005	688428094
2006	1178000000
2007	1369670044.5
2008	1893535805.6
2009	1933321570.7
2010	2947346678
2011	2103336253.1
2012	1957166190.7
2013	3732779938.7
2014	4151019894.8
2015	6630821000
2016	7834619000
2017	10764940000
2018	9029402000
2019	9737331000
2020	10986456000
2021	18088196000
2022	18530070000