Year	% (cumulative)
1998	99.5821151733398
1999	99.7153854370117
2000	99.8419876098633
2001	99.7680816650391
2002	99.7621154785156
2003	99.7998199462891
2004	99.853385925293
2005	99.8434295654297
2006	99.8762893676758
2007	99.8649215698242
2008	99.8476104736328
2009	99.8563613891602
2010	99.8989181518555
2011	99.8227233886719
2012	99.8174209594727
2013	99.8066711425781
2014	99.8555603027344
2015	99.8268508911133
2016	99.8044967651367
2017	99.8352966308594
2018	99.83984375
2019	99.842887878418
2020	99.8400039672852
2021	99.8424377441406
2022	99.4170913696289