Year Percent 2010-01-01 2.0219 2011-01-01 2.0135 2012-01-01 2.0230 2013-01-01 1.9836 2014-01-01 1.9714 2015-01-01 1.9702 2016-01-01 1.9662 2017-01-01 1.9350 2018-01-01 1.9052 2019-01-01 1.8895 2020-01-01 1.8759 2021-01-01 1.8620 2022-01-01 1.8493 2023-01-01 1.8351