Year	US Dollars
1961	9760000.22888
1966	23629999.16077
1967	5210000.03815
1969	839999.97377
1971	1289999.96185
1973	39999.99911
1974	42419998.16895
1975	72790000.91553
1976	82019996.64307
1977	123169998.16894
1978	139639999.38965
1979	125940002.44141
1980	128809997.55859
1981	154660003.66211
1982	160729995.72754
1983	165050003.05176
1984	152589996.33789
1985	149990005.49316
1986	146300003.05176
1987	201210006.71387
1988	170039993.28613
1989	208119995.11719
1990	194160003.66211
1991	166320007.32422
1992	149220001.2207
1993	137110000.61035
1994	268190002.44141
1995	147500000
1996	239039993.28613
1997	176229995.72754
1998	135679992.67578
1999	78269996.64307
2000	133240005.49316
2001	101879997.25342
2002	92489997.86377
2003	187649993.89648
2004	90669998.16895
2005	76230003.35693
2006	97209999.08447
2007	125199996.94824
2008	125459999.08447
2009	142130004.88281
2010	126400001.52588
2011	110849998.47412
2012	78930000.30518
2013	101449996.94824
2014	105209999.08447
2015	103250000
2016	211699996.94824
2017	119419998.16894
2018	154419998.16895
2019	116339996.33789
2020	147369995.11719
2021	157729995.72754