Year current US$ 1991 90000.0035762787 1992 100000.00149011599 1994 19999.9995529652 1995 9999.99977648258 1996 159999.99642372102 1997 159999.99642372102 1998 219999.998807907 1999 70000.0002980232 2000 50000.0007450581 2001 19999.9995529652 2002 219999.998807907 2003 90000.0035762787 2004 259999.990463257 2005 189999.99761581398 2006 29999.999329447703 2007 29999.999329447703 2010 19999.9995529652 2011 289999.99165535 2012 39999.9991059303 2014 119999.997317791 2015 109999.999403954 2016 109999.999403954 2017 270000.010728836