Year	US Dollars
1960	16409999.84741
1961	14449999.80927
1963	6750000
1966	2109999.8951
1967	850000.02384
1968	980000.01907
1969	449999.98808
1970	1320000.05245
1971	1419999.95708
1972	479999.98927
1973	560000.00238
1974	129999.99523
1975	70000.0003
1979	50000.00075
1980	10420000.07629
1981	19999.99955
1982	1769999.98093
1983	1370000.00477
1984	1120000.00477
1985	1029999.97139
1986	720000.02861
1987	200000.00298
1988	529999.97139
1989	490000.00954
1990	319999.99285
1991	140000.0006
1992	159999.99642
1993	209999.99344
1994	409999.99642
1995	-4900000.09537
1996	370000.00477
1997	449999.98808
1998	670000.01669
1999	370000.00477