Year current US$ 1970 9999.99977648258 1971 9999.99977648258 1972 9999.99977648258 1973 29999.999329447703 1974 9999.99977648258 1975 9999.99977648258 1977 9999.99977648258 1978 9999.99977648258 1979 90000.0035762787 1980 19999.9995529652 1981 9999.99977648258 1982 29999.999329447703 1983 29999.999329447703 1984 29999.999329447703 1985 29999.999329447703 1986 39999.9991059303 1987 50000.0007450581 1988 230000.004172325 1989 100000.00149011599 1990 90000.0035762787 1994 9999.99977648258 1996 9999.99977648258 1997 9999.99977648258 2005 19999.9995529652 2006 19999.9995529652