Year	US Dollars
1960	11649999.61853
1961	10250000
1962	4829999.92371
1963	6230000.01907
1964	8869999.88556
1965	13710000.03815
1966	7780000.20981
1967	18620000.83923
1968	22549999.23706
1969	11029999.73297
1970	31620000.83923
1971	55209999.08447
1972	56590000.15259
1973	48540000.91553
1974	46619998.93188
1975	34159999.84741
1976	35549999.23706
1977	45630001.06812
1978	52659999.84741
1979	64889999.38965
1980	47209999.08447
1981	39509998.32153
1982	44869998.93188
1983	39029998.7793
1984	39470001.2207
1985	62500000
1986	61729999.54224
1987	44150001.52588
1988	34389999.38965
1989	34509998.32153
1990	55409999.84741
1991	32970001.2207
1992	28110000.61035
1993	28909999.84741
1994	18540000.91553
1995	14279999.73297
1996	24590000.15259
1997	23840000.15259
1998	34669998.16895
1999	18329999.92371
2000	35240001.67847
2001	19120000.83923
2002	84080001.83105
2003	11770000.45776
2004	11649999.61853
2005	19360000.61035
2006	15020000.45776
2007	6349999.90463
2008	6949999.80927
2009	21139999.38965
2010	51729999.54224
2011	20739999.77112
2012	33409999.84741
2013	25700000.76294
2014	11329999.92371
2015	7170000.07629
2016	6079999.92371
2017	17059999.46594