Year Percent of GDP 2004-01-01 15.0082918739635 2005-01-01 15.7638888888889 2006-01-01 16.7912593444508 2007-01-01 18.8814531548757 2008-01-01 23.9653875094056 2009-01-01 23.3562315996075 2010-01-01 22.9581229581230 2011-01-01 23.4539389273800 2012-01-01 25.7899421450823 2013-01-01 26.5165347940759 2014-01-01 25.3018660812294 2015-01-01 26.4577747989276 2016-01-01 25.8842925659472 2017-01-01 23.3776490720021 2018-01-01 25.0157275258685 2019-01-01 26.4018924461263