Year Percent of GDP 2004-01-01 3.0747 2005-01-01 2.5442 2006-01-01 3.9473 2007-01-01 3.6729 2008-01-01 3.8541 2009-01-01 4.2177 2010-01-01 4.9390 2011-01-01 5.5178 2012-01-01 6.0719 2013-01-01 10.1183 2014-01-01 10.6546 2015-01-01 11.3994 2016-01-01 12.7252 2017-01-01 11.2723