Year current US$ 1974 960000.015795231 1975 29999.999329447703 1976 39999.999105930285 1977 69999.99843537807 1978 70000.00029802331 1979 60000.000521540685 1980 50000.0007450581 1981 39999.9991059303 1982 59999.9986588955 1983 59999.9986588955 1984 70000.0002980232 1985 90000.0035762787 1986 99999.99776482591 1987 120000.0010430813 1988 179999.9959766865 1989 170000.00178813917 1990 390000.00059604604 1991 1440000.0199675574 1992 11620000.01221894 1993 10629999.903962018 1994 21880000.183358785 1995 13019999.86171722 1996 2629999.91327524 1997 8760000.005364414 1998 11640000.097453592 1999 6430000.023916367 2000 2779999.94531274 2001 929999.9866634607 2002 3470000.0472366787 2003 1730000.0004470348 2004 2150000.0078231124