Year Percent of GDP 2002-01-01 34.9477 2003-01-01 33.4915 2004-01-01 32.2056 2005-01-01 31.6176 2006-01-01 35.9171 2007-01-01 33.5400 2008-01-01 34.0431 2009-01-01 32.8893 2010-01-01 31.7894 2011-01-01 30.2528 2012-01-01 30.7248 2013-01-01 34.9650 2014-01-01 36.1766 2015-01-01 33.4276 2016-01-01 32.6966 2017-01-01 32.7541 2018-01-01 30.2198 2019-01-01 27.6410