Year Percent Change 2015-01-01 6.5137 2016-01-01 6.2576 2017-01-01 3.3752 2018-01-01 4.0174 2019-01-01 4.2647 2020-01-01 4.0880 2021-01-01 4.4136 2022-01-01 4.4930 2023-01-01 4.6122