Year	DOD, current US$
1981	0
1982	0
1983	4013000
1984	73287000
1985	498208000
1986	965355000
1987	1427332000
1988	1831486000
1989	2329622000
1990	2865140000
1991	3493654000
1992	3751945000
1993	4549049000
1994	5933288000
1995	7209433000
1996	7615907000
1997	8238641000
1998	9644393000
1999	10400447000
2000	11118246000
2001	11549545000
2002	11254207000
2003	10656808000
2004	11034761000
2005	11139798000
2006	11415040000
2007	11761514000
2008	12464003000
2009	12756051000
2010	12961701000
2011	13021286000
2012	12913033000
2013	12824491000
2014	12897877000
2015	13069721000
2016	13145616000
2017	13906782000
2018	14371236000
2019	15067104000
2020	15408995000
2021	16085112000
2022	15797876000