Year	% (cumulative)
1970	80.4925537109375
1980	87.5269088745117
2001	87.3180084228516
2005	90.8201599121094
2009	97.6494979858398
2010	97.9304733276367
2011	98.2056579589844
2012	98.2855682373047
2013	98.3937377929688
2014	96.6406173706055
2015	96.7666091918945
2016	97.1764984130859
2017	97.4235687255859
2018	97.7009887695312
2019	97.9045257568359
2020	98.1814270019531
2021	98.519645690918
2022	98.6742172241211