Year Percent of GDP 2004-01-01 0.0541 2005-01-01 0.0570 2006-01-01 0.1405 2007-01-01 0.1754 2008-01-01 0.2596 2009-01-01 0.1951 2010-01-01 0.1110 2011-01-01 0.1726 2012-01-01 0.1875 2013-01-01 0.5716 2014-01-01 0.2849 2015-01-01 0.4263 2016-01-01 0.4920