Year	% (cumulative)
1991	53.5497016906738
2005	99.1942520141602
2006	99.1083679199219
2007	98.9775085449219
2008	98.9444122314453
2009	99.1327590942383
2010	99.1148376464844
2011	99.4438934326172
2012	99.705078125
2013	99.8703765869141
2014	99.8251571655273
2015	99.818000793457
2016	99.8088989257812
2017	99.780387878418
2018	99.7846908569336
2019	99.8007278442383
2020	99.8002243041992
2021	99.7133712768555
2022	99.7099380493164