Year Percent of GDP 2004-01-01 11.1157062989698 2005-01-01 12.0657347290314 2006-01-01 14.4544001893827 2007-01-01 17.3811296670567 2008-01-01 21.9758344521087 2009-01-01 28.1671219381129 2010-01-01 27.4478634419590 2011-01-01 25.6470742415307 2012-01-01 27.8484565014032 2013-01-01 30.4697210579563 2014-01-01 29.6174522415283