Year	%
2009	6.90614722173021
2010	6.72598895851595
2011	6.59677167363158
2012	6.6262106162069
2013	6.91581201111457
2014	6.94470475794164
2015	6.86319318094466
2016	7.05377047208767
2017	6.96779716958348
2018	7.08221947970916
2019	6.93745434347598
2020	6.47910281397956
2021	6.59644201234953
2022	6.42203983599479