Year	% (cumulative)
1970	86.5668716430664
1980	92.0609436035156
2001	98.7161712646484
2005	99.1535491943359
2013	99.7168273925781
2014	99.6215133666992
2015	99.6052474975586
2016	99.6013031005859
2017	99.6463394165039
2018	99.6915893554688
2019	99.6763000488281
2020	99.7081680297852
2021	99.6969757080078
2022	99.7351455688477