Year	US Dollars
1960	71250000
1961	96339996.33789
1962	37189998.62671
1963	21739999.77112
1964	26639999.38965
1965	40340000.15259
1966	28600000.38147
1967	27989999.77112
1968	34810001.37329
1969	24190000.53406
1970	37400001.52588
1971	31750000
1972	35810001.37329
1973	36040000.91553
1974	53740001.67847
1975	151729995.72754
1976	193229995.72754
1977	214460006.71387
1978	219860000.61035
1979	200860000.61035
1980	231910003.66211
1981	235529998.7793
1982	275790008.54492
1983	283440002.44141
1984	286390014.64844
1985	336649993.89648
1986	367589996.33789
1987	393290008.54492
1988	232649993.89648
1989	327649993.89648
1990	247199996.94824
1991	265519989.01367
1992	151910003.66211
1993	187490005.49316
1994	984640014.64844
1995	953210021.97266
1996	446890014.64844
1997	404809997.55859
1998	512960021.97266
1999	317119995.11719
2000	269359985.35156
2001	256420013.42773
2002	221860000.61035
2003	249399993.89648
2004	344100006.10352
2005	439529998.7793
2006	608260009.76562
2007	661650024.41406
2008	836929992.67578
2009	1024270019.53125
2010	2974770019.53125
2011	1495449951.17188
2012	1271819946.28906
2013	1146300048.82813
2014	1063650024.41406
2015	1123920043.94531
2016	1149209960.9375
2017	1029140014.64844
2018	1029449951.17188
2019	711059997.55859
2020	886950012.20703
2021	895080017.08984