Year US Dollars 1964 90000.00358 1965 449999.98808 1966 490000.00954 1967 500000 1968 340000.00358 1969 90000.00358 1970 79999.99821 1972 59999.99866 1974 159999.99642 1975 90000.00358 1976 150000.00596 1977 300000.01192 1978 479999.98927 1979 389999.98569 1980 649999.97616 1981 500000 1982 170000.00179 1983 180000.00715 1984 209999.99344 1985 2970000.02861 1986 200000.00298 1987 430000.00715 1988 70000.0003 1989 170000.00179 1990 62310001.37329 1991 -6940000.05722 1992 -6559999.94278 1993 -6449999.80927 1994 -16079999.92371 1995 -2299999.95232 1996 -4730000.01907