Year	% of cohort
1974	37.3156394958496
1975	38.7686386108398
1976	40.2091484069824
1977	43.038818359375
1980	76.5610580444336
1999	81.5191116333008
2000	93.6392364501953
2016	92.3106689453125
2017	98.4965515136719