Year Percent of GDP 2004-01-01 25.5821329105351 2005-01-01 25.6964721419018 2006-01-01 34.4563035069080 2007-01-01 31.5642993061162 2008-01-01 33.8387002594076 2009-01-01 29.4306314096167 2010-01-01 21.0556660343725 2011-01-01 20.6661094145338 2012-01-01 29.8076318846041 2013-01-01 28.3157695584259 2014-01-01 28.8248642694340 2015-01-01 27.1027628987560 2016-01-01 24.7365640942867 2017-01-01 27.4542508532624 2018-01-01 24.9824665717761 2019-01-01 23.8381948828777