Year Percent of GDP 1990-01-01 30.2454942016516 1991-01-01 32.1299111323629 1992-01-01 34.0172750620102 1993-01-01 33.6982232562416 1994-01-01 44.0175057105221 1995-01-01 35.8414007648945 1996-01-01 37.9207501444174 1997-01-01 44.2932887174408 1998-01-01 30.3184574598946 2008-01-01 41.5459511265523 2009-01-01 50.4730898780580 2010-01-01 47.4324456804089 2011-01-01 42.3601055938696 2012-01-01 39.2866761471944 2013-01-01 32.9184777564688 2014-01-01 31.5638493875520 2015-01-01 29.2069977231107 2016-01-01 31.8721809093852