Year Percent of GDP 2004-01-01 0.0529 2005-01-01 0.0579 2006-01-01 0.0544 2007-01-01 0.0462 2008-01-01 0.0486 2009-01-01 0.0639 2010-01-01 0.0679 2011-01-01 0.0641 2012-01-01 0.0665 2013-01-01 0.0694 2014-01-01 0.0719 2015-01-01 0.0748 2016-01-01 0.0719