Year current US$ 1960 9999.99977648258 1964 19999.9995529652 1965 9999.99977648258 1967 9999.99977648258 1969 19999.9995529652 1970 9999.99977648258 1973 9999.99977648258 1974 19999.9995529652 1975 19999.9995529652 1976 50000.0007450581 1977 39999.9991059303 1978 39999.9991059303 1979 59999.9986588955 1980 59999.9986588955 1981 50000.0007450581 1982 50000.0007450581 1983 59999.9986588955 1984 9999.99977648258 1985 70000.0002980232 1986 70000.0002980232 1987 209999.993443489 1988 360000.01430511504 1989 509999.99046325695 1990 579999.983310699 1994 39999.9991059303 1995 59999.9986588955