Year	DOD, current US$
1970	222951.3
1971	392628.2
1972	642608.5
1973	1098448.9
1974	1446665
1975	1681808.9
1976	2734133.3
1977	6521975.2
1978	17441021.6
1979	18195181.7
1980	11453748.1
1981	11604102.3
1982	8250458.8
1983	6085080.1
1984	3409396.1
1985	20229640.1
1986	30999204.3
1987	38073969.2
1988	37777796.5
1989	28239108.2
1990	29754078.3
1991	38303702.3
1992	22026960.1
1993	25921176.6
1994	26333967.5
1995	17103767.2
1996	17463226.7
1997	25317636.2
1998	21931531.7
1999	25289741.4
2000	22987942.2
2001	18254058.5
2002	18738975.5
2003	15237035.9
2004	15216114.1
2005	10988408.1
2006	13128186.6
2007	25833503.1
2008	4126706.7
2009	11923564.7
2010	9328664.6
2011	18182223.8
2012	6963075.6
2013	6946278.9
2014	4640127.4
2015	5000
2016	16806579
2017	27766574.1
2018	31290964.8
2019	26512697.8
2020	31035270.5
2021	31965877.1
2022	34301117.4