Year Percent of GDP 2009-01-01 0.0075 2010-01-01 0.0119 2011-01-01 0.0671 2012-01-01 2.7145 2013-01-01 13.7354 2014-01-01 22.9530 2015-01-01 28.9060 2016-01-01 35.7046