Year Percent of GDP 2004-01-01 5.9024 2005-01-01 6.5228 2006-01-01 6.3639 2007-01-01 6.0096 2008-01-01 5.9497 2009-01-01 6.9082 2010-01-01 7.8282 2011-01-01 7.6996 2012-01-01 7.9795 2013-01-01 8.2350 2014-01-01 8.4886 2015-01-01 12.3821 2016-01-01 10.2484