Year Percent Change 2015-01-01 5.9960 2016-01-01 6.6737 2017-01-01 5.2000 2018-01-01 2.9215 2019-01-01 2.5000 2020-01-01 2.4000 2021-01-01 2.4000 2022-01-01 2.4000 2023-01-01 2.4000