Year Percent Change 2015-01-01 1.2323 2016-01-01 1.9588 2017-01-01 2.8445 2018-01-01 2.6605 2019-01-01 2.8038 2020-01-01 2.7774 2021-01-01 2.6386 2022-01-01 2.5780 2023-01-01 2.5662