Year Percent of GDP 2004-01-01 6.8911 2005-01-01 7.2352 2006-01-01 9.5062 2007-01-01 7.4891 2008-01-01 9.8716 2009-01-01 8.6300 2010-01-01 8.7810 2011-01-01 9.1169 2012-01-01 8.9394 2013-01-01 9.2873 2014-01-01 10.7190 2015-01-01 10.4909 2016-01-01 18.0575