Year Percent of GDP 2004-01-01 14.5838745821704 2005-01-01 14.2418253266724 2006-01-01 13.6479731277197 2007-01-01 13.4667638111063 2008-01-01 13.4317807338974 2009-01-01 13.9463314205974 2010-01-01 14.5253344227837 2011-01-01 16.8845664337795 2012-01-01 15.6475855737549 2013-01-01 14.0113487035796 2014-01-01 14.4463001869366 2015-01-01 12.2931225038764 2016-01-01 12.0795469132629 2017-01-01 11.2479137253704 2018-01-01 10.9598814754524 2019-01-01 10.8723655404229