Year Percent of GDP 2004-01-01 12.89146872272790 2005-01-01 13.21498049535990 2006-01-01 14.11903377294470 2007-01-01 9.18809266071830 2008-01-01 7.75926575116076 2009-01-01 10.66504240159700 2010-01-01 11.57941961166160 2011-01-01 12.43199588206980 2012-01-01 12.98343510654560 2013-01-01 15.86704988304560 2014-01-01 15.47403858740340 2015-01-01 16.08022543187560 2016-01-01 14.55734384912420 2017-01-01 12.85787487701290 2018-01-01 12.02525402583480 2019-01-01 10.57236526953950