Year Percent of GDP 2004-01-01 0.5957 2005-01-01 0.5118 2006-01-01 0.4763 2007-01-01 0.4440 2008-01-01 0.2106 2009-01-01 0.1766 2010-01-01 0.2601 2011-01-01 0.2532 2012-01-01 0.2766 2013-01-01 0.3220 2014-01-01 0.2869 2015-01-01 0.2913 2016-01-01 0.2787 2017-01-01 0.2860