Year	% (cumulative)
1981	56.6950416564941
1991	63.1911506652832
2014	79.6078567504883
2015	78.4057464599609
2016	79.2140121459961
2017	80.8084487915039
2018	82.0889739990234
2019	81.5388946533203
2020	81.919792175293