Year Percent of GDP 2004-01-01 32.9240387130152 2005-01-01 32.1457145934770 2006-01-01 32.2178329444488 2007-01-01 27.6082919315490 2008-01-01 26.6659359034592 2009-01-01 39.9252864883304 2010-01-01 43.8344943671833 2011-01-01 47.3950224500420 2012-01-01 57.4988433927589 2013-01-01 76.3085094821776 2014-01-01 94.1160907381611 2015-01-01 94.8999237876784