Year % 2005 7.67386956333956 2006 8.75421645126092 2007 9.20601880146874 2008 9.26703960140389 2009 9.88565799396453 2010 9.63558328195112 2011 8.89157267044717 2012 9.3523758332804 2013 8.95995332199604 2014 9.36725269015941 2015 8.66007590129692 2016 8.38446079492268 2017 9.06866638092056 2018 9.13097972814708 2019 9.80458894958446 2020 9.73369120198331 2021 10.8444290021733 2022 9.85501085137568