Year Percent of GDP 1990-01-01 79.5366179323318 1991-01-01 73.3198641237983 1992-01-01 64.3777251279192 1993-01-01 55.6921593793011 1994-01-01 47.6199733960913 1995-01-01 41.0698874465101 2002-01-01 43.0474515411835 2003-01-01 45.0766412986635 2004-01-01 45.6965419186624 2005-01-01 42.0675597614326 2006-01-01 40.5884641486101 2007-01-01 40.0881257702829 2008-01-01 39.7997545288773 2009-01-01 50.8357553824479 2010-01-01 49.5598230655171 2011-01-01 50.0286816425423 2012-01-01 51.6464316160996 2013-01-01 52.9992519246741 2014-01-01 52.6758487332831 2015-01-01 54.4638052452962 2016-01-01 52.7163793776217