Year Percent of GDP 2004-01-01 10.32479767576880 2005-01-01 11.30062936438430 2006-01-01 10.13450324048060 2007-01-01 9.49341462247554 2008-01-01 9.55651021497828 2009-01-01 9.99318009336692 2010-01-01 31.08907479694160 2011-01-01 41.92964427445810 2012-01-01 27.85823778396810 2013-01-01 12.72584453957320 2014-01-01 13.13963250192560 2015-01-01 13.81381019686190 2016-01-01 12.27488758880700 2017-01-01 19.09837008094780 2018-01-01 18.89361474563550 2019-01-01 18.90000000000000