Year	US Dollars
1990	248057078.74421
1991	235391413.37423
1992	240444077.60576
1993	268218292.91015
1994	269981969.37361
1995	296724102.60475
1996	300546089.08463
1997	317110353.63319
1998	363343621.62512
1999	374960152.06585
2000	394293335.86338
2001	402406098.83415
2002	376526832.19028
2003	398692314.66361
2004	424693295.26988
2005	454544723.45612
2006	518816854.23723
2007	556361901.02164
2008	637458700.04609
2009	643266338.83697
2010	658085572.64349
2011	684302150.0059
2012	686192424.35835
2013	752601322.19546
2014	788924240.02717
2015	773293506.95646
2016	825241621.40485
2017	876922308.23143