Year current US$ 1969 29999.999329447703 1970 9999.99977648258 1971 19999.9995529652 1972 29999.999329447703 1973 59999.9986588955 1974 109999.999403954 1975 100000.00149011599 1976 119999.997317791 1977 100000.00149011599 1978 100000.00149011599 1979 19999.9995529652 1980 79999.9982118607 1981 129999.995231628 1982 79999.9982118607 1983 200000.00298023198 1984 180000.00715255702 1985 129999.995231628 1986 209999.993443489 1987 300000.011920929 1988 79999.9982118607 1989 230000.004172325 1990 140000.000596046 1991 310000.002384186 1992 119999.997317791 1993 180000.00715255702 1994 129999.995231628 1995 330000.013113022 1996 180000.00715255702 1997 310000.002384186 1998 319999.99284744303 1999 720000.028610229 2000 349999.99403953605 2001 689999.997615814 2002 379999.99523162795 2003 259999.990463257 2004 180000.00715255702 2005 270000.010728836 2006 119999.997317791 2007 289999.99165535 2008 250000