Year % (cumulative) 2012 11.7385492324829 2013 11.7891597747803 2014 12.1814098358154 2015 12.2010297775269 2016 12.5010347366333 2017 12.7788333892822 2018 13.4380149841309 2019 13.4386491775513 2020 13.2115325927734 2021 13.0840711593628 2022 13.7765769958496