Year Percent of GDP 2004-01-01 46.7676 2005-01-01 50.3252 2006-01-01 54.2221 2007-01-01 65.2592 2008-01-01 72.4333 2009-01-01 75.8808 2010-01-01 78.5372 2011-01-01 83.5724 2012-01-01 85.1554 2013-01-01 83.2658 2014-01-01 82.4176 2015-01-01 79.4546 2016-01-01 81.4874 2017-01-01 84.0970