Year	US Dollars
1982	125927591.63481
1983	121647329.92149
1984	224382109.16694
1985	185277791.66875
1986	180826636.05052
1987	362431021.99805
1988	380941720.76711
1989	478348000.34852
1990	676598927.81449
1991	555201579.15121
1992	838277535.96829
1993	1005321552.28676
1994	1054482871.24857
1995	1592785963.5031
1996	1843116087.56779
1997	1787518964.80383
1998	1595728681.00466
1999	1318960447.45305
2000	2083878443.53904
2001	2224559656.43866
2002	2517116040.53078
2003	2880865705.87942
2004	4325122784.27364
2005	3939908377.12674
2006	4210138225.81048
2007	4996204532.16192
2008	6893056196.30678
2009	9383039214.45837
2010	15506360750.7935
2011	21292933576.1143
2012	24977283820.8238
2013	31052407595.1585
2014	29505828147.8885
2015	17771070757.6706
2016	18829783242.2359
2017	23863817592.8233