Year	% of cohort
1971	77.0818862915039
1973	69.8781967163086
1974	86.2747802734375
1975	98.4275970458984
1976	80.7917633056641
1977	75.7940902709961
1978	76.4783096313477
1991	80.1435089111328
2000	60.7476615905762
2001	93.2042465209961
2002	54.8516693115234
2008	75.6583404541016
2013	85.0981369018555
2016	86.7345504760742
2017	80.8289489746094
2021	91.393310546875