Year Percent of GDP 2004-01-01 36.3622 2005-01-01 39.5911 2006-01-01 41.4001 2007-01-01 43.1321 2008-01-01 46.1069 2009-01-01 43.7445 2010-01-01 40.8605 2011-01-01 41.5399 2012-01-01 41.2717 2013-01-01 40.9950 2014-01-01 41.5897 2015-01-01 43.9559 2016-01-01 43.9817