Year Percent of GDP 2008-01-01 1.1587 2009-01-01 1.6049 2010-01-01 2.1724 2011-01-01 3.0187 2012-01-01 6.4767 2013-01-01 6.4971 2014-01-01 5.1856 2015-01-01 16.3098 2016-01-01 31.0566