Year Percent Change 2010-01-01 4.3957 2011-01-01 2.1581 2012-01-01 2.0602 2013-01-01 3.0845 2014-01-01 4.5220 2015-01-01 4.3879 2016-01-01 3.3603 2017-01-01 2.6612 2018-01-01 3.8483 2019-01-01 3.6690 2020-01-01 3.8793 2021-01-01 4.1718 2022-01-01 4.0159 2023-01-01 3.9337