Year Percent of GDP 2006-01-01 8.6084 2007-01-01 8.0475 2008-01-01 8.7473 2009-01-01 8.1163 2010-01-01 7.6905 2011-01-01 7.7237 2012-01-01 7.1200 2013-01-01 7.1840 2014-01-01 7.4262 2015-01-01 7.9567