Year Percent of GDP 2004-01-01 18.33965707192190 2005-01-01 17.81187802374320 2006-01-01 12.38103528808360 2007-01-01 18.08550864934930 2008-01-01 14.37514280154210 2009-01-01 15.46957563787910 2010-01-01 16.64477599847670 2011-01-01 17.35560993332050 2012-01-01 14.05953772607360 2013-01-01 13.38160000158290 2014-01-01 12.65074789798500 2015-01-01 11.07472998338710 2016-01-01 9.48168211507375 2017-01-01 11.48643377562500 2018-01-01 13.67363069762850 2019-01-01 12.89109892707930