Year Percent Change 2015-01-01 9.0954 2016-01-01 8.0496 2017-01-01 8.1085 2018-01-01 5.2670 2019-01-01 9.1237 2020-01-01 8.7470 2021-01-01 8.6648 2022-01-01 8.3953 2023-01-01 8.3911