Year	US Dollars
1960	46689998.62671
1961	80449996.94824
1962	91010002.13623
1963	111459999.08447
1964	124680000.30518
1965	140160003.66211
1966	159339996.33789
1967	168240005.49316
1968	139190002.44141
1969	102819999.69482
1970	120180000.30518
1971	123419998.16894
1972	102760002.13623
1973	137869995.11719
1974	120209999.08447
1975	146160003.66211
1976	174169998.16895
1977	110410003.66211
1978	86620002.74658
1979	141429992.67578
1980	74769996.64307
1981	87160003.66211
1982	105110000.61035
1983	127569999.69482
1984	179960006.71387
1985	193869995.11719
1986	200860000.61035
1987	345429992.67578
1988	264760009.76562
1989	238119995.11719
1990	221800003.05176
1991	291829986.57227
1992	300980010.98633
1993	267279998.7793
1994	264450012.20703
1995	225839996.33789
1996	295440002.44141
1997	217669998.16895
1998	248169998.16895
1999	214679992.67578
2000	234559997.55859
2001	263440002.44141
2002	343880004.88281
2003	269079986.57227
2004	231580001.83105
2005	303230010.98633
2006	246970001.2207
2007	235360000.61035
2008	238529998.7793
2009	225300003.05176
2010	168500000
2011	178309997.55859
2012	152960006.71387
2013	146880004.88281
2014	158619995.11719
2015	347880004.88281
2016	262089996.33789
2017	220259994.50684
2018	401450012.20703
2019	522609985.35156
2020	343399993.89648
2021	283220001.2207