Year	% (cumulative)
1999	96.0422286987305
2007	97.3159332275391
2008	97.3485794067383
2009	97.3860092163086
2010	97.4533386230469
2011	97.4403686523438
2012	97.4705963134766
2013	97.4958572387695
2014	97.5231018066406
2015	97.5297393798828
2016	97.5310287475586
2017	97.5007476806641
2018	97.5059967041016
2019	97.5649032592773
2021	98.7808532714844
2022	98.600471496582
2023	98.4464416503906