Year	% of cohort
1973	42.0197715759277
1986	54.8354301452637
1987	65.2106018066406
1994	61.4990081787109
1999	63.3265609741211
2000	59.232551574707
2001	59.7051811218262
2013	82.1884307861328
2015	89.4412078857422
2016	88.2896728515625
2019	97.655891418457
2020	99.3847579956055