Year Percent of GDP 2004-01-01 26.5039688533119 2005-01-01 21.5979968925898 2006-01-01 19.4326869228866 2007-01-01 19.1469661397848 2008-01-01 19.5917995628592 2009-01-01 21.1063380489957 2010-01-01 21.5841304078782 2011-01-01 25.7166044437723 2012-01-01 23.3126274941316 2013-01-01 29.5835394740787 2014-01-01 27.9158866548593 2015-01-01 32.2232952244478 2016-01-01 31.1253471571522 2017-01-01 24.1089984099901 2018-01-01 28.2312645452803 2019-01-01 26.4442581189227