Year	% of cohort
1983	77.5600967407227
1998	77.5608215332031
2001	59.8284187316895
2002	69.6665267944336
2012	83.408332824707
2015	88.1100692749023
2016	88.3098983764648
2017	90.3403472900391
2018	92.5720672607422
2019	92.9346237182617