Year	% of cohort
1983	79.0018463134766
1998	76.7917098999023
2001	58.3653717041016
2002	68.2258834838867
2012	82.1508712768555
2015	86.391227722168
2016	86.4166488647461
2017	88.6473999023438
2018	90.7415390014648
2019	90.838020324707