Year Percent of GDP 2004-01-01 79.6409232548904 2005-01-01 86.7639443770783 2006-01-01 77.0504286381151 2007-01-01 82.3541411860032 2008-01-01 72.6329072141841 2009-01-01 72.5728794155964 2010-01-01 81.1719510466610 2011-01-01 76.2820033227288 2012-01-01 74.2949987100312 2013-01-01 64.9026370596022 2014-01-01 58.9348304042897 2015-01-01 45.3417379881316 2016-01-01 39.4102007996854 2017-01-01 39.7958801482535 2018-01-01 41.9862903985258 2019-01-01 39.0548783685670