Year Percent of GDP 2004-01-01 4.3261 2005-01-01 4.8726 2006-01-01 4.7998 2007-01-01 4.8679 2008-01-01 4.6493 2009-01-01 4.8465 2010-01-01 5.1796 2011-01-01 4.9991 2012-01-01 4.8945 2013-01-01 4.4919 2014-01-01 3.5306 2015-01-01 3.0726 2016-01-01 2.8387