Year Percent of GDP 2004-01-01 0.7585 2005-01-01 0.8901 2006-01-01 1.0588 2007-01-01 1.2073 2008-01-01 1.2892 2009-01-01 1.2449 2010-01-01 1.5238 2011-01-01 4.7008 2012-01-01 4.2917 2013-01-01 4.7813 2014-01-01 5.1034 2015-01-01 5.4718 2016-01-01 5.5393