Year Percent of GDP 2006-01-01 11.5242 2007-01-01 19.0082 2008-01-01 11.8719 2009-01-01 13.1015 2010-01-01 12.3835 2011-01-01 12.3377 2012-01-01 12.8049 2013-01-01 14.2219 2014-01-01 13.0970 2015-01-01 15.2363 2016-01-01 15.0970