Year Percent of GDP 2004-01-01 12.5161 2005-01-01 11.5094 2006-01-01 11.2327 2007-01-01 10.7088 2008-01-01 10.5237 2009-01-01 11.5374 2010-01-01 10.4522 2011-01-01 9.3346 2012-01-01 8.5378 2013-01-01 8.1290 2014-01-01 7.4798 2015-01-01 6.5323 2016-01-01 5.1703