Year % (cumulative) 2014 15.6694898605347 2015 17.1442699432373 2016 16.8529891967773 2017 17.5311908721924 2018 18.8298854827881 2019 19.4608707427979 2020 20.8025703430176 2021 23.1135864257812 2022 22.7038650512695