Year	% (cumulative)
1980	42.3596801757812
1996	70.3100891113281
2000	84.7692184448242
2005	82.3581085205078
2009	90.5961608886719
2010	91.2178726196289
2016	93.94287109375
2017	96.676025390625
2018	96.5948104858398
2019	94.3737335205078
2020	97.0555877685547
2021	96.6997680664062
2022	94.7857818603516