Year Percent of GDP 2000-01-01 65.563 2001-01-01 70.056 2002-01-01 78.866 2003-01-01 73.896 2004-01-01 70.167 2005-01-01 68.659 2006-01-01 65.920 2007-01-01 63.789 2008-01-01 61.904 2009-01-01 65.003 2010-01-01 63.076 2011-01-01 61.204 2012-01-01 62.187 2013-01-01 60.197 2014-01-01 62.307 2015-01-01 72.574 2016-01-01 78.430 2017-01-01 83.973