Year Percent of GDP 2004-01-01 25.9129219124658 2005-01-01 20.6323973652695 2006-01-01 22.1227762505359 2007-01-01 22.2278775473337 2008-01-01 21.7994537986937 2009-01-01 30.1360531970335 2010-01-01 34.3875101657079 2011-01-01 28.4199082522168 2012-01-01 31.3996767933124 2013-01-01 27.3744088863308 2014-01-01 30.3867388666310 2015-01-01 26.9049572883492 2016-01-01 16.7024868006637 2017-01-01 21.1141070827722 2018-01-01 23.5970012358883 2019-01-01 25.7518278214753