Year Percent Change 2010-01-01 6.6201 2011-01-01 7.5159 2012-01-01 7.8897 2013-01-01 8.4509 2014-01-01 8.7738 2015-01-01 8.6724 2016-01-01 8.1784 2017-01-01 8.6084 2018-01-01 9.4171 2019-01-01 9.7513 2020-01-01 10.2402 2021-01-01 10.7537 2022-01-01 11.2930 2023-01-01 11.7440