Year	Percent
2009	97.33826
2010	97.35362
2011	97.36778
2012	97.37247
2013	97.37713
2014	97.38176
2015	97.3864
2016	97.39048
2017	97.394
2018	97.39702
2019	97.39948
2020	97.40142
2021	97.40282
2022	97.40372