Year	DOD, current US$
1970	6120000
1971	5825000
1972	5510000
1973	5180000
1974	4835000
1975	4476000
1976	6301000
1977	9602000
1978	14293000
1979	16334000
1980	17660000
1981	26805000
1982	35610000
1983	42926000
1984	37204000
1985	43501000
1986	56147000
1987	68526000
1988	58675000
1989	53296000
1990	36939000
1991	33294000
1992	27617000
1993	23538000
1994	20938000
1995	19202000
1996	14472000
1997	9855000
1998	9904000
1999	9131000
2000	9007000
2001	8959000
2002	9050000
2003	14843000
2004	23657000
2005	23642000
2006	22420000
2007	20105000
2008	14178000
2009	7570000
2010	2367000
2011	1179000
2012	2455000
2013	6117000
2014	12550000
2015	20446000
2016	26404000
2017	37763000
2018	38899000
2019	35611000
2020	42306000
2021	86306000
2022	174781000