Year Percent of GDP 2004-01-01 5.6822 2005-01-01 7.3740 2006-01-01 8.2603 2007-01-01 9.4237 2008-01-01 9.6601 2009-01-01 13.1935 2010-01-01 13.2379 2011-01-01 10.9851 2012-01-01 10.3818 2013-01-01 8.9524 2014-01-01 7.7364 2015-01-01 7.0499 2016-01-01 7.1018