Year	DOD, current US$
1993	0
1994	186772000
1995	295244000
1996	489653000
1997	647613000
1998	899393000
1999	1082146000
2000	1056836000
2001	1070169000
2002	1177821000
2003	1265026000
2004	1274897000
2005	599318000
2006	501840000
2007	426690000
2008	463042000
2009	546879000
2010	1829914000
2011	2307600000
2012	2640643000
2013	3096616000
2014	3428914000
2015	3261017000
2016	4313483000
2017	4184924000
2018	3977324000
2019	3801644000
2020	3615097000
2021	3463170000
2022	3576185000