Year Percent Change 2015-01-01 6.6793 2016-01-01 6.2108 2017-01-01 6.8122 2018-01-01 6.6000 2019-01-01 6.5000 2020-01-01 6.5000 2021-01-01 6.5000 2022-01-01 6.5000 2023-01-01 6.5000