Year	% of cohort
1990	78.7242431640625
1998	80.2118377685547
1999	64.250129699707
2001	89.2187728881836
2002	86.7484970092773
2003	83.3878326416016
2015	92.7593688964844
2017	94.3935089111328
2018	99.6545104980469
2019	95.6470718383789
2020	97.7389221191406