Year Percent 2010-01-01 0.3148 2011-01-01 0.3219 2012-01-01 0.3306 2013-01-01 0.3385 2014-01-01 0.3350 2015-01-01 0.3348 2016-01-01 0.3379 2017-01-01 0.3340 2018-01-01 0.3335 2019-01-01 0.3337 2020-01-01 0.3345 2021-01-01 0.3352 2022-01-01 0.3361 2023-01-01 0.3366