Year Percent of GDP 2004-01-01 0.1327 2005-01-01 0.1444 2006-01-01 0.1661 2007-01-01 0.1595 2008-01-01 0.1732 2009-01-01 0.1725 2010-01-01 0.4575 2011-01-01 0.4415 2012-01-01 0.3952 2013-01-01 0.3544 2014-01-01 0.4264 2015-01-01 0.4169 2016-01-01 0.6458