Year % (cumulative) 2001 91.5103378295898 2006 97.8392715454102 2007 97.9815063476562 2008 98.2865142822266 2009 98.3663024902344 2010 98.0100173950195 2011 96.9740219116211 2012 97.8357086181641 2013 97.9959030151367 2014 98.9027862548828 2015 98.8532867431641 2016 98.7385330200195 2017 99.0142135620117 2018 99.0512847900391 2019 99.0555572509766 2020 99.2136993408203 2021 99.205940246582 2022 99.2885055541992