Year Percent Change 2015-01-01 8.1545 2016-01-01 7.1127 2017-01-01 6.7408 2018-01-01 7.3550 2019-01-01 7.7849 2020-01-01 7.9156 2021-01-01 8.0837 2022-01-01 8.1494 2023-01-01 8.1985