Year	%
2009	8.56654508720971
2010	8.799975245355
2011	8.84510172420863
2012	8.81227893874936
2013	9.15159721181849
2014	9.20274538590688
2015	9.36191741166209
2016	9.33143961937975
2017	9.37951712686412
2018	9.4405074456163
2019	9.39570266980086
2020	8.6063941052102
2021	8.62368627738747
2022	8.57788925795035