Year Percent of GDP 1995-01-01 78.547 1996-01-01 69.856 1997-01-01 61.598 1998-01-01 51.479 1999-01-01 46.647 2000-01-01 36.073 2001-01-01 33.234 2002-01-01 30.555 2003-01-01 29.926 2004-01-01 28.216 2005-01-01 26.077 2006-01-01 23.616 2007-01-01 23.908 2008-01-01 42.404 2009-01-01 61.547 2010-01-01 86.000 2011-01-01 110.880 2012-01-01 119.925 2013-01-01 119.817 2014-01-01 104.265 2015-01-01 76.931 2016-01-01 73.556 2017-01-01 68.555