Year	US Dollars
1990	615880569.98137
1991	658592440.71745
1992	727350935.98366
1993	789623163.35531
1994	812232713.19052
1995	796875067.08107
1996	859079137.38993
1997	986476362.63307
1998	1066962089.98931
1999	1097345378.56778
2000	1125609037.46594
2001	1152901696.8165
2002	1100102461.61169
2003	1098782226.06817
2004	1181103086.24184
2005	1328144966.41349
2006	1496990735.64205
2007	1563037601.58466
2008	1533150138.11795
2009	1560590792.64381
2010	1691051643.57275
2011	1835493986.51847
2012	1919084921.83483
2013	2077125436.68448
2014	2188221075.8227
2015	2323153189.22495
2016	2464488705.41036
2017	2574233859.1155