Year Percent of GDP 2004-01-01 22.4285406048065 2005-01-01 22.9771413892751 2006-01-01 21.9466609733998 2007-01-01 39.9675449913807 2008-01-01 40.2421537985051 2009-01-01 27.4138448431234 2010-01-01 42.9558360114739 2011-01-01 41.5521186948087 2012-01-01 32.7613885693163 2013-01-01 38.3765659505495 2014-01-01 35.3500558300421 2015-01-01 27.3653500275538 2016-01-01 25.5189310042616 2017-01-01 31.5882632499699 2018-01-01 36.6873285540076 2019-01-01 36.5839769822729