Year	% of cohort
1994	78.9040832519531
1995	92.0908508300781
1996	88.8584594726562
2001	92.1794662475586
2002	89.8779907226562
2004	84.7268218994141
2007	89.3197937011719
2016	99.7753067016602
2017	99.9835510253906