Year Percent of GDP 2009-01-01 6.3434 2010-01-01 7.3350 2011-01-01 6.9411 2012-01-01 7.3347 2013-01-01 7.7792 2014-01-01 8.2550 2015-01-01 9.4981 2016-01-01 10.0902 2017-01-01 9.9365