Year Percent of GDP 2004-01-01 26.8344 2005-01-01 27.7775 2006-01-01 31.1516 2007-01-01 33.2708 2008-01-01 36.2798 2009-01-01 38.9221 2010-01-01 39.3485 2011-01-01 37.9036 2012-01-01 40.2498 2013-01-01 40.2209 2014-01-01 49.6189 2015-01-01 58.7984 2016-01-01 77.1103 2017-01-01 95.9448