Year Percent of GDP 2004-01-01 16.60251534097430 2005-01-01 15.55045166831800 2006-01-01 14.38527264879820 2007-01-01 13.44896771596200 2008-01-01 13.02323418829630 2009-01-01 10.56546466738830 2010-01-01 15.52371906640190 2011-01-01 18.19506279731590 2012-01-01 13.89585806255040 2013-01-01 12.45099468039470 2014-01-01 11.62055719588680 2015-01-01 9.71401381654296 2016-01-01 8.28920252380918 2017-01-01 7.71402179954373 2018-01-01 7.90768755436561 2019-01-01 8.43892497790187