Year	US Dollars
1990	424429521.29071
1991	415206995.50117
1992	468567797.60999
1993	490425058.50423
1994	472320573.56963
1995	500554634.78386
1996	501709195.94621
1997	530599835.56974
1998	541713778.47313
1999	562054948.9369
2000	637693573.44742
2001	668485120.67356
2002	690170640.60053
2003	717881659.21518
2004	750556584.75641
2005	797871731.47618
2006	844876386.78843
2007	880349056.33949
2008	895144099.94108
2009	920485485.75633
2010	952954923.43843
2011	998184491.34428
2012	1045361468.93825
2013	1103081352.09122
2014	1148295490.19475
2015	1177765164.84429
2016	1221298205.58706
2017	1274946227.36934