Year	% of cohort
1972	75.8236465454102
1974	63.6309394836426
1975	51.9975318908691
1976	57.355770111084
1977	50.0820083618164
1979	65.5974884033203
1980	59.596321105957
2003	72.7510986328125
2004	77.6312637329102
2014	93.0039291381836