Year % (cumulative) 2003 64.5542526245117 2011 72.5558395385742 2014 77.8181457519531 2015 78.6587600708008 2016 79.1999359130859 2017 79.9968566894531 2018 62.7289695739746 2019 81.8237915039062 2020 81.9217376708984 2021 59.2587928771973