Year Percent of GDP 2004-01-01 0.1312 2005-01-01 0.1488 2006-01-01 0.1688 2007-01-01 0.4748 2008-01-01 0.5149 2009-01-01 0.5573 2010-01-01 0.6223 2011-01-01 0.3390 2012-01-01 0.3786 2013-01-01 0.3287 2014-01-01 0.2652 2015-01-01 0.2894 2016-01-01 0.2968 2017-01-01 0.3270