Year Percent of GDP 1988-01-01 19.3770187511474 1989-01-01 20.1450807013808 1990-01-01 20.5945375773956 1991-01-01 22.1755684359628 1992-01-01 23.4467936696951 1993-01-01 23.4365969223017 1994-01-01 22.9999382923128 1995-01-01 21.9941544127573 1996-01-01 20.6524934911796 1997-01-01 20.6626371650137 1998-01-01 21.2094467048521 1999-01-01 21.1923195721100 2000-01-01 24.7625741969916 2001-01-01 25.9550198800215 2002-01-01 23.2281740692768 2003-01-01 20.1354253143422 2004-01-01 19.9711067600638 2005-01-01 19.2554468224616 2006-01-01 20.5654240710968 2007-01-01 19.9917331010885 2008-01-01 22.6651474253533 2009-01-01 20.6600100576980 2010-01-01 21.6017653376063 2011-01-01 22.5990671001149 2012-01-01 21.3708241518278 2013-01-01 21.0720070836521 2014-01-01 20.8541785537915 2015-01-01 19.5147287145965 2016-01-01 18.2030380359049 2017-01-01 19.0086132001719