Year Percent of GDP 2004-01-01 124.2710 2005-01-01 135.0589 2006-01-01 133.1078 2007-01-01 134.2357 2008-01-01 126.4947 2009-01-01 133.2524 2010-01-01 133.8749 2011-01-01 135.1439 2012-01-01 144.6961 2013-01-01 165.2070 2014-01-01 169.4732 2015-01-01 169.5922 2016-01-01 174.6946