Year Percent of GDP 2004-01-01 15.158045767482700 2005-01-01 17.211493514989300 2006-01-01 15.685766938212000 2007-01-01 14.398454201563900 2008-01-01 13.904719874496400 2009-01-01 8.534926237256910 2010-01-01 8.155299020037720 2011-01-01 7.927726318500930 2012-01-01 8.502066868402310 2013-01-01 8.189271804618000 2014-01-01 3.664425932607100 2015-01-01 -1.332933516405160 2016-01-01 -0.131797098104441 2017-01-01 3.487736286716110 2018-01-01 4.178532018906340 2019-01-01 3.801029423141060