Year % (cumulative) 2014 14.556960105896 2015 16.3892402648926 2016 16.8242301940918 2017 17.67214012146 2018 17.4785346984863 2019 18.5177001953125 2020 19.8447856903076 2021 20.328685760498 2022 19.6718120574951