Year Percent of GDP 2007-01-01 45.6678 2008-01-01 46.9905 2009-01-01 44.4503 2010-01-01 42.2032 2011-01-01 44.3309 2012-01-01 44.7575 2013-01-01 41.1889 2014-01-01 39.7581 2015-01-01 42.2082 2016-01-01 42.5883