Year	US Dollars
1960	130610000.61035
1961	843130004.88281
1962	954270019.53125
1963	903739990.23438
1964	741530029.29688
1965	698140014.64844
1966	812770019.53125
1967	610400024.41406
1968	451070007.32422
1969	415589996.33789
1970	322839996.33789
1971	160399993.89648
1972	203559997.55859
1973	183860000.61035
1974	65940002.44141
1975	429209991.45508
1976	41000000
1977	37090000.15259
1978	15920000.07629
1979	-83580001.83105
1980	-22760000.22888
1981	2599999.90463
1982	4920000.07629
1983	29879999.16077
1984	40860000.61035
1985	132809997.55859
1986	10020000.45776
1987	42770000.45776
1988	79610000.61035
1989	112819999.69482
1990	150690002.44141
1991	170720001.2207
1992	170960006.71387
1993	246369995.11719
1994	194809997.55859
1995	154589996.33789
1996	227229995.72754
1997	165669998.16895
1998	140820007.32422
1999	91000000
2000	70809997.55859
2001	83389999.38965
2002	11119999.88556
2003	101910003.66211
2004	68980003.35693
2005	190529998.7793
2006	106440002.44141
2007	101870002.74658
2008	88830001.83105
2009	70379997.25342
2010	176009994.50684
2011	152789993.28613
2012	114349998.47412
2013	73699996.94824
2014	232690002.44141
2015	58130001.06812
2016	195850006.10352
2017	74169998.16895