Year Percent of GDP 2010-01-01 19.5634 2011-01-01 19.7867 2012-01-01 19.9799 2013-01-01 25.5613 2014-01-01 25.9594 2015-01-01 25.6482 2016-01-01 26.4625 2017-01-01 24.3323