Year current US$ 1972 19999.9995529652 1973 9999.99977648258 1976 19999.9995529652 1977 119999.997317791 1978 19999.9995529652 1979 29999.999329447703 1980 90000.0035762787 1981 59999.9986588955 1982 119999.997317791 1983 159999.99642372102 1984 219999.998807907 1985 610000.014305115 1986 750000 1987 449999.988079071 1988 839999.973773956 1989 970000.028610229 1990 2259999.99046326 1991 1299999.95231628 1992 1190000.0572204601 1993 689999.997615814 1994 680000.007152557 1995 860000.014305115 1996 920000.016689301 1997 419999.986886978 1998 439999.997615814 1999 389999.98569488496 2000 150000.005960464 2001 70000.0002980232 2002 79999.9982118607 2003 70000.0002980232 2004 200000.00298023198 2005 230000.004172325 2006 250000 2007 349999.99403953605 2008 469999.998807907 2009 649999.976158142 2010 1000000