Year	US Dollars
1960	129949996.94824
1961	15489999.77112
1962	25030000.68665
1963	57860000.61035
1964	17729999.54224
1965	20229999.54224
1966	28920000.07629
1967	33939998.62671
1968	142800003.05176
1969	113879997.25342
1970	74489997.86377
1971	49389999.38965
1972	108550003.05176
1973	81419998.16895
1974	22000000
1975	18000000
1976	24489999.77112
1977	44950000.76294
1978	13140000.34332
1979	16969999.31335
1980	19610000.61035
1981	23600000.38147
1982	17149999.61853
1983	15600000.38147
1984	17370000.83923
1985	23680000.30518
1986	57220001.2207
1987	27500000
1988	58459999.08447
1989	51060001.37329
1990	66120002.74658
1991	57529998.7793
1992	84819999.69482
1993	160809997.55859
1994	104580001.83106
1995	83779998.7793
1996	44959999.08447
1997	47700000.76294
1998	37599998.47412
1999	34419998.16895
2000	30719999.31335
2001	23819999.69482
2002	24049999.23706
2003	22739999.77112
2004	27959999.08447
2005	20159999.84741
2006	26719999.31335
2007	35880001.06812
2008	30530000.68665
2009	47330001.83105
2010	43209999.08447
2011	16729999.54224
2012	16930000.30518
2013	34930000.30518
2014	86919998.16895
2015	24860000.61035
2016	19489999.77112
2017	44220001.2207