Year	% of cohort
1993	97.2455673217773
1995	97.6405868530273
1996	98.403923034668
1998	99.1891326904297
1999	99.4483337402344
2000	99.1046676635742
2001	96.1620864868164
2002	99.3154220581055
2004	98.3248901367188
2005	100
2006	99.2626266479492
2007	100
2010	99.6074066162109
2011	99.3375701904297
2012	98.2632827758789
2013	98.1811294555664
2014	98.6009979248047
2015	99.5791702270508
2016	97.6082382202148
2017	98.7380065917969
2018	98.0769577026367
2019	98.5257720947266
2020	98.7800216674805
2021	91.7450637817383