Year % (cumulative) 2006 99.5708236694336 2007 98.8629837036133 2008 98.9045867919922 2009 98.6556015014648 2010 98.635383605957 2011 98.7592163085938 2012 98.7222900390625 2013 98.6136474609375 2014 98.8210220336914 2015 98.822624206543 2016 98.7598266601562 2017 98.8639984130859 2018 98.8952407836914 2019 98.7511215209961 2020 98.8097610473633 2021 98.5882720947266 2022 98.7630996704102