Year % (cumulative) 2013 24.8877696990967 2014 25.9655208587646 2015 25.5467205047607 2016 26.615270614624 2017 27.1771392822266 2018 28.5613594055176 2019 28.8715553283691 2020 29.795259475708 2021 31.7849750518799 2022 33.1645622253418