Year % (cumulative) 2001 88.063346862793 2006 96.7054824829102 2007 96.7908706665039 2008 97.4039459228516 2009 97.5528335571289 2010 97.0034713745117 2011 95.4384994506836 2012 96.7557220458984 2013 96.9087600708008 2014 98.2963943481445 2015 98.1775360107422 2016 98.0250701904297 2017 98.4818649291992 2018 98.5186614990234 2019 98.6290893554688 2020 98.9160079956055 2021 98.8520202636719 2022 99.0373687744141