Year	US Dollars
1990	830520840.06407
1991	859849242.21137
1992	954859063.73078
1993	975241702.27451
1994	1016933870.12987
1995	1049791515.3066
1996	1111073895.05111
1997	1122348152.96777
1998	1200792281.98917
1999	1256733691.64373
2000	1281977325.13214
2001	1259257191.62739
2002	1302967253.54346
2003	1367243395.95272
2004	1481722611.30436
2005	1525536661.13441
2006	1721203652.6876
2007	1774739947.28503
2008	1906129163.63953
2009	1985054732.26625
2010	1991312219.73462
2011	2076454557.28718
2012	2091812577.74599
2013	2199710543.55478
2014	2146006219.06891
2015	2203787848.22141
2016	2260208911.06638
2017	2366482085.96698