Year	US Dollars
1960	268890014.64844
1961	2011520019.53125
1962	1245780029.29688
1963	1346209960.9375
1964	1551369995.11719
1965	1644959960.9375
1966	2078979980.46875
1967	1045099975.58594
1968	1219459960.9375
1969	722340026.85547
1970	737900024.41406
1971	602719970.70312
1972	475079986.57227
1973	296609985.35156
1974	546039978.02734
1975	499420013.42773
1976	337559997.55859
1977	217160003.66211
1978	220330001.83105
1979	199479995.72754
1980	172220001.2207
1981	547520019.53125
1982	453690002.44141
1983	281040008.54492
1984	407119995.11719
1985	257309997.55859
1986	298059997.55859
1987	483279998.7793
1988	342970001.2207
1989	341239990.23438
1990	243000000
1991	276989990.23438
1992	-457739990.23438
1993	230169998.16895
1994	317160003.66211
1995	286640014.64844
1996	306070007.32422
1997	299329986.57227
1998	334890014.64844
1999	129740005.49316
2000	305410003.66211
2001	369100006.10352
2002	315500000
2003	266940002.44141
2004	188059997.55859
2005	238330001.83105
2006	110970001.2207
2007	320339996.33789
2008	441309997.55859
2009	363600006.10352
2010	468130004.88281
2011	748049987.79297
2012	1232000000
2013	888469970.70312
2014	827890014.64844
2015	1067939941.40625
2016	721099975.58594
2017	282049987.79297
2018	432450012.20703
2019	280450012.20703
2020	612530029.29688
2021	1071160034.17969