Year % (cumulative) 2014 2.97441005706787 2015 2.90017008781433 2016 2.90631008148193 2017 2.93955540657043 2018 2.93415999412537 2019 2.96341991424561 2020 2.87605619430542 2021 2.97480964660645 2022 3.13897466659546