Year Percent of GDP 2004-01-01 1.1615 2005-01-01 2.0590 2006-01-01 3.1358 2007-01-01 3.0590 2008-01-01 6.0034 2009-01-01 9.9629 2010-01-01 10.3254 2011-01-01 13.2789 2012-01-01 15.2381 2013-01-01 14.1836 2014-01-01 13.0251 2015-01-01 16.9565 2016-01-01 16.1837