Year current US$ 1968 109999.999403954 1969 79999.9982118607 1970 109999.999403954 1971 129999.995231628 1972 159999.99642372102 1973 109999.999403954 1974 280000.001192093 1975 829999.983310699 1976 1080000.04291534 1977 319999.99284744303 1978 330000.013113022 1979 610000.014305115 1980 730000.019073486 1981 389999.98569488496 1982 400000.00596046395 1983 469999.998807907 1984 360000.01430511504 1985 340000.00357627904 1986 289999.99165535 1987 400000.00596046395 1988 140000.000596046 1989 209999.993443489 1990 289999.99165535 1991 330000.013113022 1992 389999.98569488496 1993 9999.99977648258 1994 250000 1995 -200000.00298023198 1996 59999.9986588955 1997 239999.994635582 1998 70000.0002980232 2000 9999.99977648258 2003 29999.999329447703 2004 360000.01430511504 2005 259999.990463257 2006 39999.9991059303 2007 50000.0007450581 2008 239999.994635582 2009 219999.998807907 2010 250000