Year Percent of GDP 2004-01-01 31.4796356517043 2005-01-01 27.1495619894310 2006-01-01 25.9048028314847 2007-01-01 30.7925072260683 2008-01-01 36.1870641279749 2009-01-01 38.9299832295161 2010-01-01 41.4122200278727 2011-01-01 38.5753350523882 2012-01-01 38.8398438619318 2013-01-01 29.4090722939064 2014-01-01 28.1989188125998 2015-01-01 32.6033699453894 2016-01-01 28.5661833399872 2017-01-01 28.1025647501814 2018-01-01 28.3456678016016 2019-01-01 30.0402437254160