Year	DOD, current US$
1974	0
1975	56808000
1976	213175000
1977	402316000
1978	563476000
1979	739059000
1980	1039686000
1981	1308699000
1982	1734578000
1983	2136387000
1984	2364513000
1985	3589824000
1986	5057803000
1987	7390769000
1988	8003021000
1989	8542224000
1990	9542263000
1991	10597020000
1992	10639595000
1993	11283401000
1994	12008248000
1995	12502807000
1996	11138491000
1997	9991194000
1998	10691742000
1999	11424439000
2000	11714727000
2001	11434689000
2002	10728659000
2003	9778692000
2004	8943072000
2005	8131820000
2006	7422552000
2007	6821080000
2008	6967778000
2009	7876348000
2010	9053736000
2011	9717289000
2012	10467698000
2013	11339059000
2014	12175538000
2015	14370230000
2016	15747832000
2017	16550278000
2018	17314670000
2019	18112515000
2020	18832457000
2021	18968821000
2022	20187167000