Year Percent of GDP 2007-01-01 0.0000 2008-01-01 0.0000 2009-01-01 0.0082 2010-01-01 0.0116 2011-01-01 0.0358 2012-01-01 0.4249 2013-01-01 1.1331 2014-01-01 1.8597 2015-01-01 1.8573 2016-01-01 2.6890