Year	% of cohort
1976	18.3920192718506
1977	13.9672203063965
1978	30.1299495697021
1993	82.1071624755859
1997	86.2298812866211
1998	87.4827194213867
1999	90.4521636962891
2000	91.0735015869141
2003	93.2286911010742
2004	94.3590927124023
2005	93.1153793334961
2006	95.3572769165039
2007	92.4051971435547
2008	95.5038604736328
2009	93.1613693237305
2010	95.538688659668
2011	97.3910064697266
2016	94.8104934692383
2017	89.5437622070312