Year % (cumulative) 2006 0 2007 0 2008 0 2009 0 2010 0 2011 16.8107395172119 2012 0.416711449623108 2013 0.477854490280151 2014 15.4295797348022 2015 16.0395908355713 2016 16.7642307281494 2017 17.5882301330566 2018 18.2528495788574 2019 19.0207290649414 2020 19.3752346038818 2021 19.3601608276367 2022 20.5326480865479