Year Percent of GDP 2004-01-01 34.0944 2005-01-01 32.0158 2006-01-01 30.2805 2007-01-01 34.3384 2008-01-01 39.9605 2009-01-01 41.7346 2010-01-01 40.6674 2011-01-01 37.8746 2012-01-01 33.9357 2013-01-01 38.4309 2014-01-01 43.3609 2015-01-01 50.1024