Year % (cumulative) 2006 100 2007 100 2008 99.9994506835938 2009 100 2010 100 2011 99.9411468505859 2012 99.814323425293 2013 99.8079986572266 2014 99.9272079467773 2015 99.8907165527344 2016 100 2017 99.9810638427734 2018 99.8733291625977 2019 99.9902877807617 2020 99.9904632568359 2021 99.8553314208984 2022 99.9765548706055