Year	% of cohort
1971	46.6012496948242
1975	61.1374092102051
1976	60.421070098877
1977	68.0736923217773
1987	85.9730072021484
1991	53.1437110900879
1993	66.9297103881836
2007	78.3069686889648
2009	57.9810600280762
2010	59.7323989868164
2011	74.8687286376953
2012	55.7396812438965
2014	34.4101600646973
2020	72.6311492919922