Year % of GDP 2000 6.442447041467369 2001 6.540886551248555 2002 6.39844234932108 2003 6.619947516719012 2004 6.699469393041619 2005 6.759452665910885 2006 6.797714034101799 2007 6.961903414878483 2008 7.012712530561987 2009 7.566023925491437 2010 7.271399988132545 2011 7.178179514647413 2012 7.187394885266585 2013 7.34306332083972 2014 7.487249253548368 2015 7.845102510645455 2016 7.890686604292697 2017 8.091044764172983 2018 7.9683178992362445 2019 7.9790487732335835 2020 8.604944917084186 2021 8.303151825603642