Year Percent of GDP 2000-01-01 25.8548 2001-01-01 25.9783 2002-01-01 24.5344 2003-01-01 23.0377 2004-01-01 25.6962 2005-01-01 28.2588 2006-01-01 29.2327 2007-01-01 29.4829 2008-01-01 25.4714 2009-01-01 24.4959 2010-01-01 22.7151 2011-01-01 20.5056 2012-01-01 21.5208 2013-01-01 21.4577 2014-01-01 23.0132 2015-01-01 21.6670 2016-01-01 22.5030 2017-01-01 24.9729 2018-01-01 26.4646 2019-01-01 27.9645