Year Percent of GDP 1997-01-01 8.47292116140535 1998-01-01 8.04453694910322 1999-01-01 8.01599486394835 2000-01-01 9.12396778968319 2001-01-01 9.07731024153922 2002-01-01 10.08385564171000 2003-01-01 10.15512790695350 2004-01-01 11.26312885219040 2005-01-01 12.54148350513600 2006-01-01 13.60880701438490 2007-01-01 13.10036508059570 2008-01-01 15.40201900773520 2009-01-01 13.25925415178350 2010-01-01 14.07859471273510 2011-01-01 16.63554742610390 2012-01-01 16.48718580677080 2013-01-01 16.90584366593950 2014-01-01 16.15508151525790 2015-01-01 12.83492261777400 2016-01-01 11.95294255074830 2017-01-01 11.90156402665080