Year Percent of GDP 2008-01-01 0.0001 2009-01-01 0.0000 2010-01-01 0.0001 2011-01-01 0.0001 2012-01-01 0.0002 2013-01-01 0.0002 2014-01-01 0.0002 2015-01-01 0.0002 2016-01-01 0.0001