Year	DOD, current US$
1970	8345623.6
1971	15632737.7
1972	18801080.7
1973	32604009.3
1974	41034885.7
1975	44232232.2
1976	108234666.2
1977	172945523.8
1978	255345603
1979	310865806.9
1980	352946306.8
1981	392654370.5
1982	431285785.2
1983	453213661.7
1984	520891119.9
1985	621358350.4
1986	870918488.8
1987	1163997984.1
1988	1328065821.9
1989	1474076595.2
1990	1768535429.2
1991	1873131026.3
1992	1917265365.3
1993	1986718378.2
1994	2071421024.2
1995	2158263219.7
1996	2258225068.4
1997	2325961460.1
1998	2459333771.6
1999	2559997882.5
2000	2531032369.6
2001	2585719431.9
2002	3168466117.1
2003	2506301750.6
2004	2949489392.8
2005	3278601893.1
2006	3805627505.8
2007	4987662711.3
2008	5653261689.8
2009	6383404582.6
2010	6553667990.7
2011	7081958070.9
2012	7422606490.9
2013	8190455762.9
2014	9640196172.3
2015	11641678829.7
2016	13535346628.7
2017	15021015072.6
2018	15871754801.3
2019	18974239880.9
2020	20504092135.1
2021	19239005261.9
2022	18710437478.4