Year % (cumulative) 2013 23.5976505279541 2014 25.9987506866455 2015 25.9567604064941 2016 27.0169200897217 2017 27.4079475402832 2018 29.0906105041504 2019 29.7308540344238 2020 30.5021705627441 2021 31.5051383972168 2022 33.2054138183594