Year current US$ 1975 9999.99977648258 1976 19999.9995529652 1977 9999.99977648258 1978 140000.000596046 1979 310000.002384186 1980 550000.011920929 1981 1299999.95231628 1982 2259999.99046326 1983 2119999.8855590797 1984 1360000.01430511 1985 2200000.04768372 1986 1460000.03814697 1987 610000.014305115 1988 1970000.02861023 1989 6070000.17166138 1990 3390000.10490417 1991 3970000.02861023 1992 3980000.01907349 1993 4690000.05722046 1994 7829999.92370605 1995 9479999.54223633 1996 9930000.30517578 1997 7329999.92370605 1998 8140000.34332275 1999 9010000.22888184 2000 11220000.2670288 2001 11579999.923706101 2002 3700000.04768372 2003 2690000.05722046 2004 5309999.94277954 2005 3720000.02861023 2006 1500000 2007 899999.976158142 2008 449999.988079071 2009 699999.988079071 2010 1500000