Year % (cumulative) 2009 0 2010 0 2011 29.4516925811768 2012 27.3010005950928 2013 30.0510406494141 2014 27.421989440918 2015 30.6493244171143 2016 28.1508102416992 2017 27.1470394134521 2018 26.7286930084229 2019 26.3573799133301 2020 25.6726837158203 2022 26.1524200439453