Year	%
2008	6.76557787144259
2009	7.08666781955874
2010	6.59282558490416
2011	6.39806045184222
2012	7.02289614603664
2013	7.2249759721181
2014	7.69096399838565
2015	7.66968696675763
2016	7.50499734854729
2017	7.29875378491429
2018	8.96818751362541
2019	9.32702816597098
2020	8.88828769731785
2021	8.18252567378343
2022	7.89714683542292