Year Percent of GDP 2011-01-01 22.7488624861019 2012-01-01 10.7628169881515 2013-01-01 15.4249032696772 2014-01-01 20.8097366253838 2015-01-01 14.5505034797673 2016-01-01 33.6666888988885 2017-01-01 41.6087424979284 2018-01-01 46.2347252819553 2019-01-01 38.0528763551877