Year % (cumulative) 2007 23.6377105712891 2013 23.024055480957 2014 23.0678749084473 2015 24.8805847167969 2016 24.5450763702393 2017 24.8423767089844 2018 30.7420825958252 2019 33.9445190429688 2020 28.5130805969238 2021 33.221565246582 2022 31.2719631195068