Year % (cumulative) 2001 99.6387634277344 2006 99.7166442871094 2007 99.6868743896484 2008 99.6857299804688 2009 99.6346588134766 2010 99.7023315429688 2011 99.8702392578125 2012 99.7424392700195 2013 99.7522964477539 2014 99.7848434448242 2015 99.8219680786133 2016 99.8057022094727 2017 99.7869110107422 2018 99.7428665161133 2019 99.7565383911133 2020 99.7848281860352 2021 99.7926025390625 2022 99.8181533813477