Year	US Dollars
1960	389100006.10352
1961	225309997.55859
1962	321799987.79297
1963	410709991.45508
1964	213199996.94824
1965	159199996.94824
1966	144720001.2207
1967	101610000.61035
1968	124800003.05176
1969	205059997.55859
1970	162410003.66211
1971	275350006.10352
1972	256880004.88281
1973	326579986.57227
1974	275500000
1975	207809997.55859
1976	235720001.2207
1977	302000000
1978	560299987.79297
1979	829330017.08984
1980	681710021.97266
1981	603030029.29688
1982	701200012.20703
1983	697880004.88281
1984	600320007.32422
1985	777890014.64844
1986	657820007.32422
1987	491850006.10352
1988	544669982.91016
1989	218809997.55859
1990	218830001.83105
1991	228970001.2207
1992	135270004.27246
1993	113480003.35693
1994	172970001.2207
1995	147479995.72754
1996	51020000.45776
1997	76980003.35693
1998	102790000.91553
1999	100400001.52588
2000	128720001.2207
2001	161710006.71387
2002	158399993.89648
2003	151660003.66211
2004	140740005.49316
2005	161779998.7793
2006	159080001.83105
2007	198550003.05176
2008	513159973.14453
2009	349959991.45508
2010	339470001.2207
2011	334829986.57227
2012	452260009.76562
2013	3753989990.23438
2014	1313849975.58594
2015	1251260009.76563
2016	1618790039.0625
2017	1614750000
2018	1740949951.17188
2019	2098689941.40625
2020	2869659912.10938
2021	1432030029.29688