Year Percent of GDP 2011-01-01 5.49210831622493 2012-01-01 10.73425764722770 2013-01-01 12.84365087405430 2014-01-01 20.58728437970190 2015-01-01 14.57500318167930 2016-01-01 17.48629426536510 2017-01-01 8.65437385416392 2018-01-01 9.22970968417663 2019-01-01 7.81656146224185