Year	% (cumulative)
1989	75.7183074951172
2000	90.2871475219727
2001	90.5093460083008
2002	91.1617050170898
2003	92.2452163696289
2004	92.8519897460938
2005	92.9810409545898
2006	93.8432540893555
2007	94.0963516235352
2008	94.7673034667969
2009	95.294807434082
2010	95.7208480834961
2011	96.3410034179688
2012	96.62890625
2013	96.926887512207
2014	97.3082504272461
2015	97.3790664672852
2016	97.5063018798828
2017	97.857063293457
2018	98.1079406738281
2019	97.9612579345703
2020	98.4045333862305
2021	98.5247802734375
2022	98.6204223632812