Year Percent of GDP 2004-01-01 32.8868 2005-01-01 38.6049 2006-01-01 41.9099 2007-01-01 57.5971 2008-01-01 66.5971 2009-01-01 69.4843 2010-01-01 68.8259 2011-01-01 65.9530 2012-01-01 66.9524 2013-01-01 66.9291 2014-01-01 60.5218 2015-01-01 56.1909 2016-01-01 54.2195 2017-01-01 55.9337