Year	DOD, current US$
1970	0
1971	0
1972	0
1973	0
1974	0
1975	0
1976	0
1977	0
1978	0
1979	0
1980	0
1991	1287387
1992	1237500
1993	1236204
1994	3284662.4
1995	3344602.5
1996	3235410.1
1997	2792947.4
1998	2661176.8
1999	3144969.3
2000	2399178.5
2001	1748614.2
2002	1524565.7
2003	1265154.9
2004	1112576.4
2005	1025358.3
2006	1079256.6
2007	1135251.7
2008	6244870.7
2009	23446658.6
2010	25430797.2
2011	27744145.2
2012	27999887.8
2013	32853084
2014	30907357.6
2015	29202886.2
2016	26566684.3
2017	26051687.5
2018	22316641.5
2019	30741595.5
2020	41921894.3
2021	62872554.4
2022	57346057.9