Year Percent of GDP 2004-01-01 63.7588 2005-01-01 66.7629 2006-01-01 68.6584 2007-01-01 71.0619 2008-01-01 74.6566 2009-01-01 79.9199 2010-01-01 84.7574 2011-01-01 82.6904 2012-01-01 82.8458 2013-01-01 86.2484 2014-01-01 88.9116 2015-01-01 94.1650 2016-01-01 98.3158