Year Percent of GDP 2000-01-01 26.8169 2001-01-01 26.3757 2002-01-01 23.0854 2003-01-01 24.1597 2004-01-01 23.3663 2005-01-01 23.1187 2006-01-01 26.8308 2007-01-01 25.8658 2008-01-01 26.4839 2009-01-01 25.6022 2010-01-01 23.5694 2011-01-01 20.7898 2012-01-01 20.2281 2013-01-01 21.4163 2014-01-01 19.8869 2015-01-01 20.9859 2016-01-01 21.3768 2017-01-01 20.8212 2018-01-01 20.8141 2019-01-01 21.0755