Year % (cumulative) 2009 31.0125999450684 2010 31.0049591064453 2011 31.0276508331299 2012 32.3196296691895 2014 35.6050109863281 2015 36.949291229248 2016 36.6171913146973 2017 37.8640937805176 2018 38.9819602966309 2019 39.6628494262695 2020 40.4104690551758 2021 40.1155204772949 2022 40.0153961181641