Year	US Dollars
1990	610747978.59836
1991	697613948.80801
1992	793837227.51472
1993	863565458.70594
1994	872094239.83218
1995	903236085.7404
1996	928269142.12726
1997	982564159.25935
1998	1018840067.38679
1999	1115589358.68962
2000	1277217265.66503
2001	1352844630.38055
2002	1451271188.60041
2003	1586658171.02595
2004	1668567861.92025
2005	1781888762.72901
2006	1920352339.49471
2007	1948214655.52828
2008	2056353417.91172
2009	2180978071.14494
2010	2202161860.89667
2011	2415240938.17313
2012	2528757783.25578
2013	2593552684.171
2014	2715542584.42638
2015	2942676427.22529
2016	2947032753.19949
2017	2954372581.39347