Year Percent Change 2015-01-01 5.9289 2016-01-01 6.8749 2017-01-01 7.9975 2018-01-01 7.4688 2019-01-01 7.7488 2020-01-01 7.9570 2021-01-01 8.1173 2022-01-01 8.3171 2023-01-01 8.3208