Year Percent of GDP 2000-01-01 26.5229 2001-01-01 25.9693 2002-01-01 31.7537 2003-01-01 34.5171 2004-01-01 36.0532 2005-01-01 30.7550 2006-01-01 26.2109 2007-01-01 21.8146 2008-01-01 19.8439 2009-01-01 15.8994 2010-01-01 14.6481 2011-01-01 14.0904 2012-01-01 12.3344 2013-01-01 15.0112 2014-01-01 15.0759 2015-01-01 14.4735 2016-01-01 16.7721 2017-01-01 33.3369 2018-01-01 34.4545 2019-01-01 30.4709