Year	US Dollars
1991	163949996.94824
1992	15829999.92371
1993	23229999.54224
1994	74379997.25342
1995	72139999.38965
1996	164699996.94824
1997	163080001.83105
1998	273179992.67578
1999	213910003.66211
2000	230520004.27246
2001	206289993.28613
2002	266799987.79297
2003	343489990.23438
2004	295410003.66211
2005	237710006.71387
2006	186990005.49316
2007	266950012.20703
2008	336279998.7793
2009	285809997.55859
2010	200220001.2207
2011	177419998.16895
2012	114459999.08447
2013	75279998.7793
2014	75389999.38965
2015	76610000.61035
2016	62930000.30518
2017	57139999.38965
2018	73629997.25342
2019	52599998.47412
2020	73849998.47412
2021	46470001.2207