Year	US Dollars
1960	131149993.89648
1961	100360000.61035
1962	87160003.66211
1963	168059997.55859
1964	184889999.38965
1965	145940002.44141
1966	147119995.11719
1967	134179992.67578
1968	153070007.32422
1969	128529998.7793
1970	149869995.11719
1971	105650001.52588
1972	85660003.66211
1973	146350006.10352
1974	102250000
1975	134279998.7793
1976	120470001.2207
1977	111720001.2207
1978	120139999.38965
1979	135220001.2207
1980	39450000.76294
1981	150199996.94824
1982	75099998.47412
1983	128320007.32422
1984	32639999.38965
1985	49729999.54224
1986	14590000.15259
1987	-2470000.02861
1988	-4719999.79019
1989	-8789999.96185
1990	8159999.84741
1991	32439998.62671
1992	6030000.20981
1993	49189998.62671
1994	68209999.08447
1995	14399999.61853
1996	99519996.64307
1997	33639999.38965
1998	32630001.06812
1999	38299999.23706
2000	36740001.67847
2001	3000000
2002	17420000.07629