Year % (cumulative) 2014 99.6634826660156 2015 99.6171188354492 2016 99.5366134643555 2017 99.5868072509766 2018 99.5941772460938 2019 99.5351028442383 2020 99.4877090454102 2021 99.6234664916992 2022 99.6375427246094