Year Percent of GDP 1990-01-01 12.6929333715070 1991-01-01 13.4334220758111 1992-01-01 15.6859336641362 1993-01-01 18.9946700665772 1994-01-01 20.6665692083394 1995-01-01 23.1661445963072 1996-01-01 23.5991683699347 1997-01-01 25.6430753103590 1998-01-01 27.9079787246950 1999-01-01 25.6923234371178 2000-01-01 26.3370973748331 2001-01-01 25.2603967813822 2002-01-01 30.3902607414096 2003-01-01 29.4377653432691 2004-01-01 29.9983918368459 2005-01-01 30.0129521560040 2006-01-01 26.3534189803434 2007-01-01 24.0052180036883 2008-01-01 23.6417272716591 2009-01-01 22.2458964083591 2010-01-01 21.5610607446658 2011-01-01 21.6726065625203 2012-01-01 21.8499716464569 2013-01-01 20.6569585113431 2014-01-01 21.0497565857541 2015-01-01 20.9044482141122 2016-01-01 19.8105756875700