Year Percent of GDP 2004-01-01 81.48664815926490 2005-01-01 76.05997895516560 2006-01-01 70.66191228358570 2007-01-01 54.55275082049200 2008-01-01 22.19941030861660 2009-01-01 9.01519631767700 2010-01-01 9.01480252041286 2011-01-01 7.95163897617565 2012-01-01 9.93397052983200 2013-01-01 15.01943491925280 2014-01-01 34.96515466920360 2015-01-01 32.61805517274520 2016-01-01 28.23734590341290 2017-01-01 27.90528697083750 2018-01-01 23.60986487254850 2019-01-01 21.66318016855510