Year Percent of GDP 2004-01-01 84.7394 2005-01-01 82.8738 2006-01-01 76.7482 2007-01-01 81.7415 2008-01-01 77.1182 2009-01-01 83.9235 2010-01-01 93.9812 2011-01-01 97.5693 2012-01-01 100.0253 2013-01-01 103.5754 2014-01-01 104.8439 2015-01-01 109.8373 2016-01-01 103.6350 2017-01-01 103.4725