Year	US Dollars
1988	9420000.07629
1989	18010000.22888
1990	16280000.68665
1991	456700012.20703
1992	562070007.32422
1993	405029998.7793
1994	225869995.11719
1995	227940002.44141
1996	295440002.44141
1997	232360000.61035
1998	379070007.32422
1999	701239990.23438
2000	494459991.45508
2001	426429992.67578
2002	455579986.57227
2003	440579986.57227
2004	351890014.64844
2005	355820007.32422
2006	357119995.11719
2007	307160003.66211
2008	336769989.01367
2009	338089996.33789
2010	353239990.23438
2011	345480010.98633
2012	335140014.64844
2013	254460006.71387
2014	262730010.98633
2015	333799987.79297
2016	180789993.28613
2017	176210006.71387
2018	344220001.2207
2019	28540000.91553
2020	309440002.44141
2021	595210021.97266