Year Percent Change 2010-01-01 6.9290 2011-01-01 8.6000 2012-01-01 7.4770 2013-01-01 8.5247 2014-01-01 8.2577 2015-01-01 9.4363 2016-01-01 8.1029 2017-01-01 6.5524 2018-01-01 6.6082 2019-01-01 6.5000 2020-01-01 6.4000 2021-01-01 6.3000 2022-01-01 6.2000 2023-01-01 6.1000