Year Percent Change 2015-01-01 6.9000 2016-01-01 6.7198 2017-01-01 6.8559 2018-01-01 6.5580 2019-01-01 6.4080 2020-01-01 6.2516 2021-01-01 6.0000 2022-01-01 5.7000 2023-01-01 5.5300