Year	US Dollars
1990	213655319543.479
1991	226769806208.11395
1992	242717344464.42001
1993	254538089437.28104
1994	273001210373.76505
1995	293004802201.58197
1996	314995206411.48492
1997	339443902617.57294
1998	357672569599.24603
1999	384090700163.06879
2000	413205783495.26093
2001	438274853152.41089
2002	451098250997.0929
2003	473650467165.08282
2004	505855881845.58893
2005	545458290826.43396
2006	605429863975.46008
2007	668315970869.27087
2008	729712970687.02698
2009	763865245447.67078
2010	796125952246.02295
2011	822210899215.79285
2012	858054045145.00793
2013	888712469989.51013
2014	932850544871.99023
2015	990882989824.89209
2016	1051090471045.31006
2017	1108685384033.29004