Year Percent Change 2015-01-01 7.8058 2016-01-01 6.4075 2017-01-01 6.6134 2018-01-01 8.6913 2019-01-01 5.7312 2020-01-01 5.6289 2021-01-01 5.9713 2022-01-01 5.7367 2023-01-01 5.7617