Year	US Dollars
1990	240159343567.81696
1991	268803680512.09891
1992	294886013099.71301
1993	328628899790.23401
1994	362084851945.79913
1995	399040918068.44489
1996	426730570424.72205
1997	420084833208.86493
1998	388583304628.86902
1999	416068298225.52997
2000	449514001252.71997
2001	471591360023.14087
2002	504514119972.39288
2003	548300697525.68298
2004	597201838170.49207
2005	641296703417.75208
2006	699404369094.42493
2007	759515095876.06311
2008	785790671240.5199
2009	787453509443.85205
2010	850877276311.15588
2011	891983915185.03406
2012	952546497808.87891
2013	975090605327.52405
2014	1015710509099.12024
2015	1057596964080.7699
2016	1111641772630.57983
2017	1180057557009.77002