Year % (cumulative) 2006 76.0192718505859 2007 75.9814224243164 2008 75.5347671508789 2009 86.7477722167969 2010 88.351692199707 2011 87.7115478515625 2012 89.0820922851562 2013 76.0130920410156 2014 76.1499099731445 2015 78.9332580566406 2016 78.4824981689453 2017 77.5676803588867 2018 78.8281784057617 2019 79.3107604980469 2020 79.7441482543945 2021 79.7742767333984