Year Percent of GDP 2004-01-01 7.0811 2005-01-01 7.4683 2006-01-01 7.2426 2007-01-01 6.5692 2008-01-01 6.5228 2009-01-01 7.2107 2010-01-01 8.0079 2011-01-01 6.9535 2012-01-01 5.6076 2013-01-01 5.2504 2014-01-01 4.8924 2015-01-01 4.5901 2016-01-01 4.9868