Year	% of cohort
1973	42.511256121548925
1986	55.55036735038381
1987	65.2106018066406
1994	61.4990081787109
1999	63.16557058303706
2000	59.250567274759895
2001	60.18660166728456
2013	82.16439099885861
2015	87.51301802731061
2016	88.10225284953763
2019	97.65881454531467
2020	99.38475799560551