Year current US$ 1969 219999.998807907 1970 230000.004172325 1971 330000.013113022 1972 330000.013113022 1973 239999.994635582 1974 349999.99403953605 1975 400000.00596046395 1976 540000.021457672 1977 589999.973773956 1978 1059999.9427795399 1979 500000 1980 150000.005960464 1981 1029999.97138977 1982 870000.004768372 1983 1259999.9904632599 1984 1100000.02384186 1985 1629999.99523163 1986 1549999.95231628 1987 1539999.96185303 1988 910000.026226044 1989 1570000.05245209 1990 1590000.0333786 1991 1649999.97615814 1992 1639999.98569489 1993 2549999.95231628 1994 1549999.95231628 1995 3150000.09536743 1996 1789999.96185303 1997 2269999.98092651 1998 1590000.0333786 1999 2240000.00953674 2000 2410000.08583069 2001 1399999.97615814 2002 2440000.05722046 2003 3240000.00953674 2004 3180000.0667572 2005 3079999.92370605 2006 1769999.98092651 2007 2549999.95231628 2008 699999.988079071