Year	US Dollars
1960	939999.99762
1961	9659999.84741
1962	13359999.65668
1963	6260000.22888
1964	5489999.77112
1965	7849999.90463
1966	68239997.86377
1967	419999.98689
1968	1929999.94755
1969	1169999.95708
1970	6409999.84741
1971	28069999.69482
1972	15750000
1973	67309997.55859
1974	159800003.05176
1975	96550003.05176
1976	585309997.55859
1977	159369995.11719
1978	243070007.32422
1979	345700012.20703
1980	485980010.98633
1981	477130004.88281
1982	385320007.32422
1983	631929992.67578
1984	533809997.55859
1985	185839996.33789
1986	204940002.44141
1987	15560000.41962
1988	-4590000.15259
1989	-4030000.20981
1990	207119995.11719
1991	137350006.10352
1992	110059997.55859
1993	157270004.27246
1994	128350006.10352
1995	120099998.47412
1996	168300003.05176
1997	204559997.55859
1998	277750000
1999	84419998.16895
2000	85500000
2001	105639999.38965
2002	88669998.16895
2003	167860000.61035
2004	68279998.7793