Year Percent of GDP 2004-01-01 86.8442 2005-01-01 71.3745 2006-01-01 75.1563 2007-01-01 76.1001 2008-01-01 74.8096 2009-01-01 81.9732 2010-01-01 85.4891 2011-01-01 84.5921 2012-01-01 77.6645 2013-01-01 76.1934 2014-01-01 74.6753 2015-01-01 72.1561 2016-01-01 72.9787 2017-01-01 73.8396