Year Percent of GDP 2004-01-01 3.0185 2005-01-01 3.3181 2006-01-01 3.4369 2007-01-01 3.8345 2008-01-01 4.2967 2009-01-01 5.3868 2010-01-01 6.4370 2011-01-01 8.3782 2012-01-01 9.6801 2013-01-01 8.8005 2014-01-01 9.9141 2015-01-01 12.7030