Year Percent of GDP 2004-01-01 0.101305524288773 2005-01-01 0.101814477289712 2006-01-01 0.111062965590635 2007-01-01 0.112994830525563 2008-01-01 0.119921915134080 2009-01-01 0.129204792206233 2010-01-01 0.126176517351591 2011-01-01 0.121132951777522 2012-01-01 0.115860600011572 2013-01-01 0.110153388593617 2014-01-01 0.116316470685429 2015-01-01 0.117157767190813