Year Percent of GDP 2004-01-01 151.6509012959020 2005-01-01 131.1631273236200 2006-01-01 115.6061575976260 2007-01-01 108.2436708268840 2008-01-01 94.1684358641837 2009-01-01 21.1723649975120 2010-01-01 22.4032049910295 2011-01-01 23.9811778059176 2012-01-01 22.6454743063655 2013-01-01 20.9707441980414 2014-01-01 18.9098114593513 2015-01-01 18.1515925247929 2016-01-01 16.7318721292603 2017-01-01 15.3210706939872 2018-01-01 14.9138062286273 2019-01-01 14.1494050226308