Year Percent of GDP 2004-01-01 65.2285 2005-01-01 68.8375 2006-01-01 70.8546 2007-01-01 79.7671 2008-01-01 87.4293 2009-01-01 91.5754 2010-01-01 89.1997 2011-01-01 88.3439 2012-01-01 94.5305 2013-01-01 95.5225 2014-01-01 87.7754 2015-01-01 81.1516 2016-01-01 78.8530 2017-01-01 77.2141