Year	% of cohort
1975	54.6530303955078
1976	69.9093170166016
1992	78.9077224731445
1993	80.7669372558594
1994	83.8027496337891
1995	84.5456924438477
1996	84.2148513793945
1998	87.892219543457
1999	88.4703216552734
2000	88.4167861938477
2001	90.0668869018555
2002	92.1650924682617
2003	91.5344390869141
2004	92.4305801391602
2005	93.2923583984375
2006	93.5037536621094
2007	92.622932434082
2008	95.118293762207
2009	95.1764984130859
2010	95.8753967285156
2011	96.5216674804688
2012	95.6034774780273
2013	96.4706802368164
2014	96.2517013549805
2015	94.006591796875
2016	97.9281234741211
2017	94.9253463745117
2018	97.4880828857422
2019	96.8175735473633
2020	98.3342819213867
2021	97.3258285522461