Year Percent of GDP 1995-01-01 19.0067586920461 1996-01-01 19.4749418109332 1997-01-01 19.5872539153726 1998-01-01 21.9140215049178 1999-01-01 21.2773858639115 2000-01-01 26.2916741577406 2001-01-01 24.7420131132910 2002-01-01 23.2526599286313 2003-01-01 22.8651084132186 2004-01-01 23.9659680368475 2005-01-01 24.9500576719004 2006-01-01 26.1355640088706 2007-01-01 26.3576883346472 2008-01-01 25.3957310597690 2009-01-01 19.4705222667447 2010-01-01 22.7777598491648 2011-01-01 25.2777349514617 2012-01-01 25.3507854975972 2013-01-01 24.9819851972848 2014-01-01 25.9459129828730 2015-01-01 25.9376464457927 2016-01-01 25.1473971414842 2017-01-01 26.7925606826796