Year	US Dollars
1990	368853677.77331
1991	385062014.26928
1992	436848639.22091
1993	485403143.02812
1994	589174463.21602
1995	683887492.85112
1996	772668513.36473
1997	874555126.49161
1998	991409185.51524
1999	1114589673.95803
2000	1288136302.50838
2001	1368048460.04295
2002	1442841831.8148
2003	1542291313.06613
2004	1743029270.66435
2005	1894153754.86483
2006	2095211963.78993
2007	2528526086.23548
2008	2733914820.02227
2009	2722442846.18257
2010	2742672831.01004
2011	2924904081.15014
2012	2999449458.51132
2013	3097952822.26265
2014	3123856370.32218
2015	3232374316.30636
2016	3394317583.44947
2017	3591689585.5216