Year	US Dollars
1960	964429992.67578
1961	1310819946.28906
1962	1527280029.29688
1963	1530650024.41406
1964	1084569946.28906
1965	1286780029.29688
1966	1403000000
1967	1371260009.76563
1968	1209010009.76563
1969	1088969970.70313
1970	1066209960.9375
1971	1156359985.35156
1972	1173619995.11719
1973	384970001.2207
1974	193350006.10352
1975	205910003.66211
1976	524989990.23438
1977	325869995.11719
1978	458440002.44141
1979	1476859985.35156
1980	2257739990.23438
1981	1825439941.40625
1982	1580040039.0625
1983	877070007.32422
1984	593469970.70312
1985	474130004.88281
1986	702739990.23438
1987	593020019.53125
1988	399850006.10352
1989	222460006.71387
1990	1851599975.58594
1991	2289149902.34375
1992	449880004.88281
1993	653140014.64844
1994	242820007.32422
1995	398730010.98633
1996	280730010.98633
1997	6309999.94278
1998	43849998.47412
1999	41430000.30518
2000	450109985.35156
2001	278890014.64844
2002	413000000
2003	211779998.7793
2004	330049987.79297
2005	453779998.7793
2006	611530029.29688
2007	778159973.14453
2008	1022710021.97266
2009	1253969970.70313
2010	951539978.02734
2011	3025010009.76563
2012	3053639892.57813
2013	2687340087.89063
2014	3231070068.35938
2015	2350120117.1875
2016	3945189941.40625
2017	3341610107.42188
2018	1189160034.17969
2019	719710021.97266
2020	538140014.64844
2021	991289978.02734