Year Percent of GDP 2004-01-01 2.3823 2005-01-01 2.4994 2006-01-01 2.5260 2007-01-01 2.5878 2008-01-01 2.6091 2009-01-01 2.8193 2010-01-01 2.8432 2011-01-01 2.7694 2012-01-01 2.6585 2013-01-01 2.3463 2014-01-01 1.5747 2015-01-01 1.4190 2016-01-01 1.4374