Year	% of cohort
1971	65.4469985961914
1973	67.8080520629883
1974	66.8149108886719
1975	84.2167587280273
1976	70.1680603027344
1977	65.4608306884766
1978	72.4468688964844
1991	75.6059265136719
2000	57.9717407226562
2001	84.5726928710938
2002	64.7431335449219
2008	68.6950607299805
2013	82.2893905639648
2016	83.2096633911133
2017	82.3752975463867
2021	85.4359664916992