Year Percent of GDP 2004-01-01 48.6112 2005-01-01 49.8530 2006-01-01 52.5071 2007-01-01 55.4934 2008-01-01 61.0590 2009-01-01 61.7185 2010-01-01 66.4163 2011-01-01 65.6391 2012-01-01 66.5213 2013-01-01 70.2068 2014-01-01 72.6221 2015-01-01 76.9552 2016-01-01 81.8147