Year Percent of GDP 2009-01-01 0.0173 2010-01-01 0.0082 2011-01-01 0.0145 2012-01-01 0.0170 2013-01-01 0.0338 2014-01-01 0.0887 2015-01-01 0.0361 2016-01-01 0.0346 2017-01-01 0.0459