Year % (cumulative) 2006 30.4643363952637 2011 30.6870708465576 2012 32.2839317321777 2013 32.9676818847656 2014 33.294189453125 2015 34.8797302246094 2016 35.7636909484863 2017 34.3056678771973 2018 37.1166496276855 2019 35.7206802368164 2020 38.0218505859375 2021 37.0638732910156 2022 37.4584083557129