Year Percent of GDP 2002-01-01 2.6244 2003-01-01 3.9694 2004-01-01 5.0022 2005-01-01 5.6493 2006-01-01 7.2690 2007-01-01 8.0527 2008-01-01 7.1740 2009-01-01 8.5049 2010-01-01 10.8839 2011-01-01 10.9937 2012-01-01 10.1258 2013-01-01 9.7613 2014-01-01 8.4542 2015-01-01 9.9617 2016-01-01 10.6874 2017-01-01 11.8344 2018-01-01 11.2227 2019-01-01 11.4079