Year % (cumulative) 2014 99.7253799438477 2015 99.6914672851562 2016 99.6673431396484 2017 99.6770401000977 2018 99.6746520996094 2019 99.5933609008789 2020 99.5570526123047 2021 99.6649551391602 2022 99.6446228027344