Year Percent of GDP 2004-01-01 25.3104852797925 2005-01-01 24.8755971010518 2006-01-01 22.7646756504510 2007-01-01 24.7942422967837 2008-01-01 27.8760532604723 2009-01-01 20.0740890259107 2010-01-01 24.4451974509235 2011-01-01 23.8756580867417 2012-01-01 22.4941589143534 2013-01-01 21.3065424156964 2014-01-01 25.1588177234339 2015-01-01 25.3203855181151 2016-01-01 26.9370052107542 2017-01-01 29.5030037832028