Year	US Dollars adjusted for inflation)
1990	226662340695.78497
1991	210760665572.24802
1992	216061251251.948
1993	224138291281.13297
1994	236001487381.02304
1995	252407972407.38898
1996	267695261963.98401
1997	284987170828.77295
1998	298138324246.34399
1999	311978533446.09204
2000	326203416741.28595
2001	330274453122.40894
2002	337017349218.98297
2003	349023496401.685
2004	366948119921.73206
2005	379768034159.12195
2006	403236194740.15894
2007	431603062580.83801
2008	449944947434.74896
2009	462634563725.00299
2010	479321460551.18896
2011	503370145590.81995
2012	511463867608.52997
2013	518582893907.737
2014	535608728816.37
2015	556200709713.79297
2016	572132126156.60107
2017	598166351606.80493