Year	US Dollars
1960	192970001.2207
1961	173619995.11719
1962	154740005.49316
1963	164009994.50684
1964	92129997.25342
1965	71010002.13623
1966	85019996.64307
1967	98699996.94824
1968	69440002.44141
1969	89250000
1970	134649993.89648
1971	226949996.94824
1972	342070007.32422
1973	663599975.58594
1974	1282380004.88281
1975	309850006.10352
1976	2589999.91417
1977	1090000.03338
1978	720000.02861
1979	284040008.54492
1980	630239990.23438
1981	271559997.55859
1982	88760002.13623
1983	97449996.94824
1984	56450000.76294
1985	36409999.84741
1986	32389999.38965
1987	30809999.46594
1988	35729999.54224
1989	41770000.45776
1990	64720001.2207
1991	134619995.11719
1992	271309997.55859
1993	410519989.01367
1994	386829986.57227
1995	582229980.46875
1996	480529998.7793
1997	438769989.01367
1998	425750000
1999	344709991.45508
2000	482799987.79297
2001	525289978.02734
2002	578590026.85547
2003	548559997.55859
2004	471390014.64844
2005	514599975.58594
2006	532130004.88281
2007	665140014.64844
2008	606119995.11719
2009	636450012.20703
2010	665469970.70312
2011	627409973.14453
2012	741710021.97266
2013	763190002.44141
2014	768969970.70312
2015	728969970.70312
2016	769719970.70312
2017	891159973.14453
2018	789299987.79297
2019	992789978.02734
2020	1373239990.23438
2021	1320239990.23438