Year % (cumulative) 2003 15.4417400360107 2011 19.571460723877 2014 21.8571548461914 2015 21.7173919677734 2016 23.6302623748779 2017 23.1528968811035 2018 22.3105792999268 2019 23.8346271514893 2020 23.6662845611572 2021 59.2587928771973