Year Percent Change 2015-01-01 15.8125 2016-01-01 12.3282 2017-01-01 6.0588 2018-01-01 6.1761 2019-01-01 7.8839 2020-01-01 7.9878 2021-01-01 7.2659 2022-01-01 7.7551 2023-01-01 7.8554