Year	% of cohort
1971	50.8529090881348
1975	62.5661010742188
1976	61.278678894043
1977	68.0736923217773
1987	88.0839691162109
1991	58.4625816345215
1992	68.0654296875
1993	72.8233489990234
2007	78.3069686889648
2009	62.0615615844727
2010	62.1973991394043
2011	74.8687286376953
2012	60.5677909851074
2014	44.7160606384277
2020	75.9753875732422