Year Percent of GDP 2010-01-01 72.9899 2011-01-01 66.5421 2012-01-01 66.9348 2013-01-01 70.7800 2014-01-01 71.4041 2015-01-01 54.9651 2016-01-01 56.4527 2017-01-01 58.2196