Year Percent of GDP 2004-01-01 34.2308 2005-01-01 36.7656 2006-01-01 35.2158 2007-01-01 38.1594 2008-01-01 38.2099 2009-01-01 45.7956 2010-01-01 39.1433 2011-01-01 34.0316 2012-01-01 36.2352 2013-01-01 40.0196 2014-01-01 44.0941 2015-01-01 55.4971 2016-01-01 58.4639