Year Percent of GDP 2009-01-01 15.5579 2010-01-01 11.9695 2011-01-01 10.5053 2012-01-01 11.6713 2013-01-01 12.2431 2014-01-01 11.5584 2015-01-01 10.4384 2016-01-01 10.2389