Year Percent of GDP 2004-01-01 3.6505 2005-01-01 3.6131 2006-01-01 3.5340 2007-01-01 3.4466 2008-01-01 3.7243 2009-01-01 3.7271 2010-01-01 3.3293 2011-01-01 2.7365 2012-01-01 2.2947 2013-01-01 1.9300 2014-01-01 1.6836 2015-01-01 1.2763 2016-01-01 1.5675 2017-01-01 1.6841