Year Percent of GDP 2004-01-01 24.0339813518482 2005-01-01 24.1312010399510 2006-01-01 26.2898687258603 2007-01-01 27.2494672481947 2008-01-01 28.5278219037968 2009-01-01 30.3737265649449 2010-01-01 34.0584889711523 2011-01-01 34.8672493637311 2012-01-01 38.2895926540862 2013-01-01 36.8883766092074 2014-01-01 38.2105546112221 2015-01-01 43.5985026665692 2016-01-01 45.9366368575909 2017-01-01 44.9855117096817 2018-01-01 44.9855117096815 2019-01-01 44.9855117096816