Year US Dollars 1960 -430000.00715 1963 150000.00596 1964 550000.01192 1965 610000.01431 1966 409999.99642 1967 4380000.11444 1968 430000.00715 1969 560000.00238 1970 529999.97139 1971 1649999.97616 1972 7579999.92371 1973 2309999.94278 1974 2259999.99046 1975 2549999.95232 1976 2210000.03815 1977 1580000.04292 1978 2410000.08583 1979 2319999.93324 1980 3319999.93324 1981 3390000.1049 1982 3349999.90463 1983 2269999.98093 1984 22809999.46594 1985 1820000.05245 1986 3609999.8951 1987 1190000.05722 1988 2450000.04768 1989 7119999.88556 1990 4809999.94278 1991 4079999.92371 1992 3930000.06676 1993 1620000.00477 1994 1320000.05245 1995 5809999.94278