Year Percent of GDP 2004-01-01 13.0252 2005-01-01 4.5254 2006-01-01 5.1559 2007-01-01 5.5692 2008-01-01 4.2621 2009-01-01 4.8709 2010-01-01 5.3690 2011-01-01 6.0865 2012-01-01 6.9519 2013-01-01 8.0391