Year Percent Change 2015-01-01 5.7094 2016-01-01 6.8607 2017-01-01 7.9269 2018-01-01 7.7147 2019-01-01 7.8830 2020-01-01 7.3851 2021-01-01 6.9759 2022-01-01 6.8713 2023-01-01 6.8069