Year Percent of GDP 2004-01-01 0.8458 2005-01-01 2.6085 2006-01-01 2.7174 2007-01-01 2.8904 2008-01-01 3.0368 2009-01-01 3.0244 2010-01-01 3.1796 2011-01-01 2.8678 2012-01-01 3.2552 2013-01-01 3.8494 2014-01-01 2.5055 2015-01-01 2.6541 2016-01-01 2.6833 2017-01-01 3.2493