Year Percent of GDP 2004-01-01 0.3707 2005-01-01 0.4106 2006-01-01 0.3625 2007-01-01 0.3577 2008-01-01 0.3416 2009-01-01 0.3088 2010-01-01 0.2871 2011-01-01 0.2885 2012-01-01 0.5929 2013-01-01 0.5572 2014-01-01 0.5752 2015-01-01 0.5616 2016-01-01 0.3915