Year Percent of GDP 2009-01-01 0.4977 2010-01-01 0.5722 2011-01-01 0.5272 2012-01-01 0.6165 2013-01-01 0.5346 2014-01-01 0.5587 2015-01-01 0.5622 2016-01-01 0.5975