Year	% (cumulative)
1970	84.2852478027344
1980	89.5820236206055
2001	98.2376327514648
2005	98.8287734985352
2013	99.5806503295898
2014	99.4277877807617
2015	99.5034790039062
2016	99.5367202758789
2017	99.558219909668
2018	99.5781326293945
2019	99.5390243530273
2020	99.6411514282227
2021	99.5860061645508
2022	99.6695404052734