Year	US Dollars
1992	22620000.83923
1993	149190002.44141
1994	221070007.32422
1995	284910003.66211
1996	252889999.38965
1997	255460006.71387
1998	269529998.7793
1999	263959991.45508
2000	261739990.23438
2001	187570007.32422
2002	231110000.61035
2003	220059997.55859
2004	232800003.05176
2005	252039993.28613
2006	264500000
2007	239080001.83105
2008	296339996.33789
2009	261380004.88281
2010	341299987.79297
2011	390380004.88281
2012	408200012.20703
2013	450489990.23438
2014	526280029.29688
2015	790359985.35156
2016	557609985.35156
2017	468070007.32422
2018	427140014.64844
2019	440850006.10352
2020	485070007.32422
2021	447820007.32422