Year Percent of GDP 2004-01-01 1.3764 2005-01-01 1.5306 2006-01-01 1.4670 2007-01-01 1.4800 2008-01-01 1.3333 2009-01-01 2.3016 2010-01-01 3.0141 2011-01-01 2.9426 2012-01-01 2.7989 2013-01-01 6.1426 2014-01-01 2.6190 2015-01-01 8.2481 2016-01-01 6.8605