Year Percent of GDP 2004-01-01 0.8251 2005-01-01 0.8541 2006-01-01 0.8728 2007-01-01 0.8204 2008-01-01 0.7470 2009-01-01 0.8106 2010-01-01 0.9666 2011-01-01 1.2543 2012-01-01 1.3183 2013-01-01 2.3239 2014-01-01 4.6108 2015-01-01 5.8750 2016-01-01 6.2807