Year current US$ 1968 19999.9995529652 1972 9999.99977648258 1974 39999.9991059303 1976 29999.999329447703 1977 9999.99977648258 1978 9999.99977648258 1979 39999.9991059303 1981 50000.0007450581 1982 50000.0007450581 1983 79999.9982118607 1984 50000.0007450581 1985 449999.988079071 1986 29999.999329447703 1987 19999.9995529652 1988 70000.0002980232 1989 90000.0035762787 1990 90000.0035762787 1991 70000.0002980232 1992 129999.995231628 1993 90000.0035762787 1994 90000.0035762787 1995 50000.0007450581 1996 79999.9982118607 1997 90000.0035762787 1998 219999.998807907 1999 29999.999329447703 2000 140000.000596046 2001 140000.000596046 2002 270000.010728836 2003 250000 2004 200000.00298023198 2005 400000.00596046395 2006 289999.99165535 2007 270000.010728836 2008 180000.00715255702 2009 230000.004172325 2010 39999.9991059303 2011 19999.9995529652 2012 59999.9986588955 2013 59999.9986588955 2014 129999.995231628 2015 50000.0007450581 2016 90000.0035762787 2017 119999.997317791