Year Percent of GDP 2004-01-01 23.7073711381066 2005-01-01 25.3438674032568 2006-01-01 23.0693009291318 2007-01-01 22.0500402228622 2008-01-01 23.1861909270645 2009-01-01 19.9629338186518 2010-01-01 22.4738924050691 2011-01-01 24.0263193883085 2012-01-01 22.2228593873645 2013-01-01 19.9127885698053 2014-01-01 18.2777746735156 2015-01-01 16.5732831976191 2016-01-01 13.9710253759327 2017-01-01 13.1853191773756 2018-01-01 13.5009653268925 2019-01-01 13.7211744721680