Year % (cumulative) 1980 15.3778896331787 1996 44.1391716003418 2000 51.6960182189941 2005 42.9071998596191 2009 63.5689392089844 2010 65.0762405395508 2016 72.1999664306641 2017 80.7349472045898 2018 81.7434310913086 2019 75.0393829345703 2020 85.0406951904297 2021 86.7094039916992 2022 79.0329971313477