Year	US Dollars
1960	236899993.89648
1961	251690002.44141
1962	221339996.33789
1963	280670013.42773
1964	175970001.2207
1965	230559997.55859
1966	362899993.89648
1967	99599998.47412
1968	243229995.72754
1969	230619995.11719
1970	185850006.10352
1971	198360000.61035
1972	172500000
1973	260799987.79297
1974	356630004.88281
1975	624979980.46875
1976	385690002.44141
1977	796849975.58594
1978	770929992.67578
1979	712880004.88281
1980	1158689941.40625
1981	968979980.46875
1982	1222079956.05469
1983	884919982.91016
1984	956070007.32422
1985	916719970.70312
1986	1079500000
1987	1076459960.9375
1988	743659973.14453
1989	724539978.02734
1990	780159973.14453
1991	265619995.11719
1992	1002580017.08984
1993	1406640014.64844
1994	832609985.35156
1995	255809997.55859
1996	113839996.33789
1997	116680000.30518
1998	118389999.38965
1999	171160003.66211
2000	161539993.28613
2001	239529998.7793
2002	227059997.55859
2003	226970001.2207
2004	234429992.67578
2005	271760009.76562
2006	434239990.23438
2007	390899993.89648
2008	762659973.14453
2009	673409973.14453
2010	497890014.64844
2011	969520019.53125
2012	928919982.91016
2013	968520019.53125
2014	1015210021.97266
2015	1213069946.28906
2016	1243699951.17188
2017	1842060058.59375
2018	1581310058.59375
2019	1761949951.17188
2020	3041689941.40625
2021	2248560058.59375