Year Percent of GDP 2004-01-01 72.8059 2005-01-01 70.8841 2006-01-01 69.0233 2007-01-01 63.4906 2008-01-01 64.3671 2009-01-01 64.3128 2010-01-01 60.4939 2011-01-01 61.9379 2012-01-01 71.3794 2013-01-01 74.0170 2014-01-01 75.5816 2015-01-01 76.5766 2016-01-01 75.8482