Year	DOD, current US$
1970	5841000
1971	7865000
1972	11799000
1973	17630000
1974	21317000
1975	28405000
1976	30988000
1977	35730000
1978	36431000
1979	36490000
1980	36329000
1981	36532000
1982	36202000
1983	35847000
1984	35382000
1985	34826000
1986	34269000
1987	33711000
1988	33104000
1989	32444000
1990	31748000
1991	30849000
1992	29811000
1993	28729000
1994	27601000
1995	26477000
1996	25351000
1997	24225000
1998	23099000
1999	21974000
2000	20847000
2001	19722000
2002	18594000
2003	17469000
2004	16344000
2005	15216000
2006	14092000
2007	12965000
2008	11840000
2009	10715000
2010	9586000
2011	8462000
2012	7336000
2013	6209000
2014	5220000
2015	4366000
2016	3512000
2017	2659000
2018	1881000
2019	1184000
2020	539000
2021	197000
2022	66000