Year current US$ 1974 50000.0007450581 1975 140000.000596046 1976 180000.00715255702 1977 39999.9991059303 1978 90000.0035762787 1979 180000.00715255702 1980 209999.993443489 1981 159999.99642372102 1982 159999.99642372102 1983 239999.994635582 1984 400000.00596046395 1985 180000.00715255702 1986 140000.000596046 1987 379999.99523162795 1988 270000.010728836 1989 230000.004172325 1990 289999.99165535 1991 109999.999403954 1992 490000.009536743 1993 310000.002384186 1994 519999.980926514 1995 239999.994635582 1996 70000.0002980232 1998 -140000.000596046 2000 -310000.002384186 2001 310000.002384186 2003 -230000.004172325