Year Percent of GDP 1992-01-01 25.746 1993-01-01 27.739 1994-01-01 29.310 1995-01-01 31.673 1996-01-01 33.561 1997-01-01 32.662 1998-01-01 35.200 1999-01-01 40.097 2000-01-01 42.060 2001-01-01 49.435 2002-01-01 152.248 2003-01-01 128.693 2004-01-01 117.266 2005-01-01 79.197 2006-01-01 69.803 2007-01-01 60.979 2008-01-01 52.560 2009-01-01 53.828 2010-01-01 42.001 2011-01-01 37.549 2012-01-01 38.949 2013-01-01 41.689 2014-01-01 43.587 2015-01-01 55.079 2016-01-01 54.955 2017-01-01 57.576