Year Percent of GDP 2004-01-01 29.1447 2005-01-01 30.5819 2006-01-01 27.9634 2007-01-01 30.5247 2008-01-01 34.3717 2009-01-01 22.0878 2010-01-01 26.5859 2011-01-01 25.3229 2012-01-01 22.6741 2013-01-01 20.6091 2014-01-01 24.3810 2015-01-01 29.6484 2016-01-01 32.4285