Year % of GDP 2000 6.102215872790459 2001 6.134778526015013 2002 6.101668135168274 2003 6.200388240429415 2004 6.177945211587033 2005 6.133260223352864 2006 5.938238971753304 2007 5.729189683819468 2008 5.888003584091916 2009 6.39010513797377 2010 6.267968379040071 2011 6.697544776398698 2012 6.756365886230183 2013 6.51588816358604 2014 6.514373583619952 2015 6.500715135998375 2016 6.581081995923993 2017 6.540787447267543 2018 6.557047016241708 2019 6.730005022657529 2020 6.95053581924881 2021 6.761496375557313