Year % (cumulative) 1992 51.2512512207031 2004 67.380126953125 2005 69.1882400512695 2006 71.6848983764648 2007 73.366943359375 2008 73.9915008544922 2009 74.5087203979492 2010 75.841667175293 2011 77.2228317260742 2012 78.7048034667969 2013 79.6970520019531 2014 78.9592819213867 2015 78.6391830444336 2016 80.3129577636719 2017 80.8327407836914 2018 81.7732315063477 2019 81.826530456543 2020 82.9165267944336 2021 84.6264495849609 2022 85.8635025024414