Year current US$ 1969 239999.994635582 1970 270000.010728836 1971 230000.004172325 1972 239999.994635582 1973 230000.004172325 1974 170000.00178813902 1975 119999.997317791 1976 140000.000596046 1977 119999.997317791 1978 50000.0007450581 1979 19999.9995529652 1981 9999.99977648258 1982 59999.9986588955 1983 119999.997317791 1984 949999.988079071 1985 370000.00476837205 1986 330000.013113022 1987 349999.99403953605 1988 360000.01430511504 1989 400000.00596046395 1990 500000 1991 740000.009536743 1992 709999.978542328 1993 980000.019073486 1994 500000 1995 1120000.00476837 1996 560000.002384186 1997 1220000.02861023 1998 759999.990463257 1999 1100000.02384186 2000 839999.973773956 2001 560000.002384186 2002 579999.983310699 2003 750000 2004 660000.026226044 2006 850000.023841858 2007 720000.028610229