Year Percent of GDP 2004-01-01 21.6290196239317 2005-01-01 20.8818917716917 2006-01-01 21.1924485501978 2007-01-01 23.8741370623323 2008-01-01 24.2364656118100 2009-01-01 22.0209974790627 2010-01-01 24.0257450501887 2011-01-01 19.7234487859020 2012-01-01 17.1830626727704 2013-01-01 17.7999231044764 2014-01-01 20.1575740332476 2015-01-01 20.7603814814480 2016-01-01 22.7652104147673 2017-01-01 22.2874464313313 2018-01-01 19.3684638138710 2019-01-01 18.9536597616917