Year Percent of GDP 2004-01-01 0.3844 2005-01-01 0.3187 2006-01-01 0.2749 2007-01-01 0.2489 2008-01-01 0.2187 2009-01-01 0.2147 2010-01-01 0.2358 2011-01-01 0.1845 2012-01-01 0.1713 2013-01-01 0.1634 2014-01-01 0.1694 2015-01-01 0.1719 2016-01-01 0.2272