Year Percent of GDP 2004-01-01 16.89146063 2005-01-01 11.77473066 2006-01-01 10.13817177 2007-01-01 8.23383420 2008-01-01 6.38897437 2009-01-01 8.83721945 2010-01-01 7.45086245 2011-01-01 16.05873115 2012-01-01 6.80400354 2013-01-01 8.50705885 2014-01-01 13.54502036 2015-01-01 18.75290447