Year Percent of GDP 2004-01-01 110.82749393384800 2005-01-01 75.06483561230040 2006-01-01 7.53000840445966 2007-01-01 8.45944178837103 2008-01-01 5.98463848314662 2009-01-01 9.04948950893959 2010-01-01 7.31015810007795 2011-01-01 7.96169674721928 2012-01-01 13.68838743066650 2013-01-01 13.55349067397610 2014-01-01 19.89886849804840 2015-01-01 34.54006660183070 2016-01-01 38.16448009145470 2017-01-01 36.90041268892530 2018-01-01 41.19040121343110 2019-01-01 44.53208660087820