Year	% of cohort
1974	60.0028686523438
1975	57.3103408813477
1977	60.2979888916016
1978	64.1346206665039
1982	88.6197891235352
1983	89.5287399291992
1984	93.1223907470703
1985	91.0717086791992
1986	90.87744140625
1987	91.9892883300781
1988	92.8686676025391
1989	93.1604614257812
1991	93.589973449707
1993	93.1989593505859
1994	92.7842330932617
1995	93.5203018188477
1996	94.2329788208008
1997	92.7423324584961
1998	92.1147079467773
1999	91.7202529907227
2000	93.7586364746094
2001	94.8303527832031
2002	97.2605133056641
2011	92.1043319702148
2012	99.0986099243164
2014	97.5828323364258
2015	99.8445892333984
2016	97.8241806030273
2018	98.8053512573242
2019	99.1149368286133
2020	96.6335220336914
2021	98.5284576416016