Year	% of cohort
1986	88.3447494506836
1987	91.0624237060547
1990	78.520866394043
1992	49.0579109191895
1995	81.9515228271484
1996	77.2810592651367
2012	75.86328125
2013	84.4022979736328
2019	88.2474212646484
2020	89.4515533447266
2021	86.4029922485352