Year	% of cohort
1990	72.0709533691406
1998	77.063850402832
1999	65.2185592651367
2001	82.9779815673828
2002	81.682243347168
2003	81.582160949707
2015	80.8978424072266
2017	90.2987594604492
2018	94.2792892456055
2019	97.7144927978516
2020	95.2283706665039