Year current US$ 1969 439999.997615814 1970 449999.988079071 1971 500000 1972 540000.021457672 1973 509999.99046325695 1974 540000.021457672 1975 550000.011920929 1976 439999.997615814 1977 699999.988079071 1978 550000.011920929 1979 519999.980926514 1980 109999.999403954 1981 319999.99284744303 1982 129999.995231628 1983 170000.00178813902 1984 100000.00149011599 1985 560000.002384186 1986 620000.004768372 1987 970000.028610229 1988 910000.026226044 1989 1009999.99046326 1990 680000.007152557 1991 1080000.04291534 1992 990000.009536743 1993 1700000.04768372 1994 759999.990463257 1995 4179999.8283386203 1996 709999.978542328 1997 2460000.03814697 1998 1470000.02861023 1999 1960000.03814697 2000 1559999.9427795399 2001 1879999.99523163 2002 1129999.99523163 2003 1139999.98569489 2004 800000.011920929 2005 2089999.9141693101 2006 1289999.96185303 2007 1879999.99523163 2008 370000.00476837205