Year	% of cohort
1990	75.3264617919922
1998	78.5990371704102
1999	64.7592391967773
2001	85.9743576049805
2002	84.1285400390625
2003	82.4504165649414
2015	86.506462097168
2017	92.2923431396484
2018	96.9083404541016
2019	96.686767578125
2020	96.4430923461914