Year	Percent
2011	38.76647
2012	38.35906
2013	37.88331
2014	37.33921
2015	36.72678
2016	36.046
2017	35.29689
2018	34.47943
2019	33.59363
2020	33.59363
2021	33.59363
2022	33.59363