Year Percent of GDP 2004-01-01 13.2005861750839 2005-01-01 12.4021488524112 2006-01-01 14.9451675257732 2007-01-01 12.8882020554439 2008-01-01 14.7410597266430 2009-01-01 18.4356270156289 2010-01-01 26.3844620854830 2011-01-01 25.0972773153887 2012-01-01 22.1881783569903 2013-01-01 22.5828082606066 2014-01-01 23.7933059373763 2015-01-01 26.8032990839539 2016-01-01 24.8971848162364 2017-01-01 24.1073112518745 2018-01-01 23.2771084337350 2019-01-01 23.2530120481928