Year Percent of GDP 2000-01-01 22.9348 2001-01-01 17.5838 2002-01-01 20.4336 2003-01-01 21.0230 2004-01-01 21.6188 2005-01-01 24.4755 2006-01-01 24.5880 2007-01-01 25.3935 2008-01-01 21.8730 2009-01-01 20.6904 2010-01-01 21.0336 2011-01-01 18.9133 2012-01-01 13.9457 2013-01-01 13.4800 2014-01-01 14.2699 2015-01-01 16.1217 2016-01-01 17.2807 2017-01-01 15.6506 2018-01-01 18.6666 2019-01-01 19.5090