Year % 2007 92.1255377124915 2008 84.6216427181477 2009 93.2902017852012 2010 78.0378555383229 2011 78.3264725234948 2012 72.1168754333206 2013 79.473908911397 2014 86.0568957969712 2015 90.2063758473308 2016 88.4513249530855 2017 79.904033035705 2018 82.9327241390386 2019 79.2508100965512 2020 72.3521917476466 2021 69.8675805157217