Year Percent of GDP 2004-01-01 25.8322 2005-01-01 33.8250 2006-01-01 38.4718 2007-01-01 33.4504 2008-01-01 29.5764 2009-01-01 23.9588 2010-01-01 23.5422 2011-01-01 24.1105 2012-01-01 26.6327 2013-01-01 27.7298 2014-01-01 29.4098 2015-01-01 32.9462 2016-01-01 35.7262