Year	DOD, current US$
1983	945000
1984	2094000
1985	5379000
1986	7049000
1987	9387000
1988	9180000
1989	13732000
1990	17515000
1991	18630000
1992	19231000
1993	20100000
1994	25647000
1995	29508000
1996	32517000
1997	39924000
1998	41431000
1999	41336000
2000	39965000
2001	43183000
2002	44431000
2003	41717000
2004	39981000
2005	36410000
2006	31558000
2007	26541000
2008	21600000
2009	17028000
2010	12528000
2011	10428000
2012	11280000
2013	12326000
2014	12692000
2015	14130000
2016	16718000
2017	16497000
2018	18799000
2019	19262000
2020	28045000
2021	37614000
2022	35912000