Year Percent of GDP 1998-01-01 7.99764834946617 1999-01-01 8.99992196100770 2000-01-01 9.45670102955375 2001-01-01 9.17952053744183 2002-01-01 8.82841736112416 2003-01-01 7.88755490364523 2004-01-01 7.56080392098260 2005-01-01 6.92486703848043 2006-01-01 6.02433801578176 2007-01-01 5.11804949255010 2008-01-01 4.27262911757958 2009-01-01 8.89149597293267 2010-01-01 11.94124621928750 2011-01-01 11.89751466415210 2012-01-01 13.66932442998500 2013-01-01 12.73521875706890 2014-01-01 13.97748369504630 2015-01-01 14.53986123026850