Year Percent of GDP 2004-01-01 1.1623 2005-01-01 2.6892 2006-01-01 5.0173 2007-01-01 7.2498 2008-01-01 9.8258 2009-01-01 9.9884 2010-01-01 11.1288 2011-01-01 4.7060 2012-01-01 3.9728 2013-01-01 4.1444 2014-01-01 3.7568 2015-01-01 3.6979 2016-01-01 3.1223 2017-01-01 3.2323