Year	% (cumulative)
1998	77.1178894042969
1999	77.9307327270508
2000	78.4783401489258
2001	79.2367706298828
2002	79.9900054931641
2003	81.0971908569336
2004	81.9156799316406
2005	82.9765090942383
2006	85.4778289794922
2007	85.7760925292969
2008	86.137077331543
2009	87.2494125366211
2010	87.9936599731445
2011	88.3989562988281
2012	88.5255432128906
2013	89.1595687866211
2014	89.6333618164062
2015	89.7707138061523
2016	90.2288589477539
2017	90.5752105712891
2018	90.5812530517578
2019	90.6672668457031
2020	90.9993286132812
2021	91.4344177246094
2022	91.1693878173828