Year current US$ 1964 19999.9995529652 1965 19999.9995529652 1966 19999.9995529652 1967 19999.9995529652 1968 9999.99977648258 1969 9999.99977648258 1970 9999.99977648258 1983 70000.0002980232 1984 170000.00178813902 1986 29999.999329447703 1987 39999.9991059303 1988 39999.9991059303 1989 9999.99977648258 1997 50000.0007450581 1998 29999.999329447703 1999 29999.999329447703 2001 70000.0002980232 2002 29999.999329447703 2004 29999.999329447703