Year % (cumulative) 1981 10.5467796325684 2014 23.6507091522217 2015 23.8480892181396 2016 20.5968704223633 2017 23.308874130249 2018 24.1929244995117 2019 24.3269691467285 2020 26.7626495361328 2021 29.085132598877 2022 29.5211448669434