Year	US Dollars adjusted for inflation)
1986	204090615.61081
1987	206539213.27861
1988	211803698.26437
1989	219271921.15115
1990	227474723.33827
1991	244370047.24606
1992	254164437.91724
1993	274855088.21012
1994	273385929.60944
1995	292752623.14334
1996	283643472.52949
1997	266438401.01672
1998	274313580.83589
1999	278109396.94051
2000	290800111.36304
2001	295880951.52372
2002	297655939.9731
2003	303450791.21371
2004	293950477.12243
2005	299996309.62398
2006	299604166.70749
2007	293724716.41746
2008	287210712.04182
2009	290591735.70151
2010	296525300
2011	306450200.92688
2012	300353437.59383
2013	288764224.83215
2014	282538297.97213
2015	296471675.71108
2016	296282643.97112
2017	302208296.85054