Year Percent of GDP 2009-01-01 25.2146 2010-01-01 26.1153 2011-01-01 24.5123 2012-01-01 22.4090 2013-01-01 21.8627 2014-01-01 21.9211 2015-01-01 23.6604 2016-01-01 26.9625