Year current US$ 1965 129999.995231628 1967 9999.99977648258 1977 9999.99977648258 1978 29999.999329447703 1979 39999.9991059303 1980 59999.9986588955 1981 29999.999329447703 1982 9999.99977648258 1983 29999.999329447703 1985 439999.997615814 1986 39999.9991059303 1987 9999.99977648258 1988 319999.99284744303 1989 109999.999403954 1990 -59999.9986588955 1991 109999.999403954 1992 39999.9991059303 1993 29999.999329447703 1994 29999.999329447703 1995 50000.0007450581 1996 70000.0002980232 1997 109999.999403954 1998 -39999.9991059303 1999 -170000.00178813902 2000 79999.9982118607 2001 79999.9982118607 2002 79999.9982118607 2003 79999.9982118607 2004 79999.9982118607