Year	US Dollars
1992	10060000.41962
1993	46540000.91553
1994	40020000.45776
1995	43060001.37329
1996	33340000.15259
1997	28709999.08447
1998	35430000.30518
1999	35430000.30518
2000	50450000.76294
2001	104620002.74658
2002	59610000.61035
2003	35459999.08447
2004	57849998.47412
2005	28659999.84741
2006	39130001.06812
2007	21190000.53406
2008	11829999.92371
2009	37909999.84741
2010	37930000.30518
2011	35810001.37329
2012	33470001.2207
2013	29579999.92371
2014	29930000.30518
2015	23430000.30518
2016	33139999.38965
2017	29069999.69482
2018	20350000.38147
2019	25790000.91553
2020	35819999.69482
2021	26239999.77112