Year	US Dollars
1960	120099998.47412
1961	238550003.05176
1962	115879997.25342
1963	244419998.16895
1964	304029998.7793
1965	350480010.98633
1966	318929992.67578
1967	253910003.66211
1968	175389999.38965
1969	158690002.44141
1970	167889999.38965
1971	247059997.55859
1972	285239990.23438
1973	256549987.79297
1974	205470001.2207
1975	248660003.66211
1976	254119995.11719
1977	276260009.76562
1978	216339996.33789
1979	255080001.83105
1980	67449996.94824
1981	55139999.38965
1982	25379999.16077
1983	34869998.93188
1984	18260000.22888
1985	42689998.62671
1986	5179999.82834
1987	88349998.47412
1988	129160003.66211
1989	256519989.01367
1990	196509994.50684
1991	757070007.32422
1992	301920013.42773
1993	334480010.98633
1994	330589996.33789
1995	270570007.32422
1996	218539993.28613
1997	330290008.54492
1998	237289993.28613
1999	209179992.67578
2000	213789993.28613
2001	676179992.67578
2002	1801040039.0625
2003	1987130004.88281
2004	2715969970.70313
2005	3355969970.70313
2006	3335419921.875
2007	5272279785.15625
2008	4989069824.21875
2009	6558370117.1875
2010	6533979980.46875
2011	6734330078.125
2012	6616490234.375
2013	5087959960.9375
2014	4893290039.0625
2015	4544720214.84375
2016	4346930175.78125
2017	4003330078.125
2018	3818199951.17188
2019	4233930175.78125
2020	4208490234.375
2021	4400990234.375