Year	% of cohort
1970	72.5406723022461
1971	80.412109375
1972	76.8198394775391
1976	61.8854293823242
1977	56.8045082092285
1979	66.8971786499023
1980	59.5804405212402
2003	76.6126480102539
2004	78.6230773925781