Year Percent of GDP 2004-01-01 0.7651 2005-01-01 1.1741 2006-01-01 1.0838 2007-01-01 1.1263 2008-01-01 1.1035 2009-01-01 1.1960 2010-01-01 1.4936 2011-01-01 2.2543 2012-01-01 2.7633 2013-01-01 4.3695 2014-01-01 5.4697 2015-01-01 4.6915 2016-01-01 8.3061