Year current US$ 1971 230000.004172325 1972 100000.00149011599 1973 419999.986886978 1974 310000.002384186 1975 39999.9991059303 1976 79999.9982118607 1977 90000.0035762787 1978 419999.986886978 1979 379999.99523162795 1980 1169999.95708466 1981 1379999.99523163 1982 810000.002384186 1983 730000.019073486 1984 1240000.0095367401 1985 219999.998807907 1986 3839999.91416931 1987 5659999.84741211 1988 5030000.20980835 1989 5420000.07629395 1990 6949999.80926514 1991 6579999.92370605 1992 11109999.6566772 1993 5929999.82833862 1994 15890000.3433228 1995 7800000.19073486 1996 6619999.88555908 1997 2000000 1998 990000.009536743 2001 689999.997615814 2002 1990000.0095367401 2003 1049999.95231628 2004 1009999.99046326