Year	DOD, current US$
1971	0
1972	285000
1973	2187000
1974	5086000
1975	7648000
1976	10620000
1977	11230000
1978	17032000
1979	17399000
1980	17706000
1981	21990000
1982	21900000
1983	21679000
1984	21478000
1985	21302000
1986	21017000
1987	20886000
1988	20665000
1989	20444000
1990	20243000
1991	19731000
1992	19329000
1993	18666000
1994	18004000
1995	17341000
1996	16678000
1997	16016000
1998	15354000
1999	14691000
2000	14029000
2001	13367000
2002	12704000
2003	12042000
2004	11380000
2005	10716000
2006	10054000
2007	9392000
2008	8729000
2009	8067000
2010	7404000
2011	6742000
2012	6080000
2013	5417000
2014	4755000
2015	4092000
2016	3429000
2017	2767000
2018	2105000
2019	1442000
2020	780000
2021	390000
2022	0