Year Percent of GDP 2004-01-01 22.9554614259583 2005-01-01 23.7497889164499 2006-01-01 21.6357250699156 2007-01-01 20.7985995832824 2008-01-01 21.8214266027648 2009-01-01 21.4413539473345 2010-01-01 25.8848884271155 2011-01-01 12.8099929810043 2012-01-01 16.9677221157982 2013-01-01 13.2799735948088 2014-01-01 18.8455728703780 2015-01-01 16.7124600424295 2016-01-01 14.4871021434257 2017-01-01 13.5769425110783 2018-01-01 13.7694675314608 2019-01-01 14.6997872359748