Year	% of cohort
1976	31.0290794372559
1988	30.8474292755127
1990	42.0979804992676
1994	21.8261203765869
1995	31.9055690765381
1996	52.4091110229492
1998	44.1401786804199
1999	47.8251800537109
2000	46.8974800109863
2001	52.1828308105469
2002	50.1115913391113
2004	25.8262500762939
2005	30.1197891235352
2009	27.8096694946289
2010	49.3351516723633
2011	38.0586585998535
2012	50.9875793457031
2015	28.5594005584717
2016	21.1082096099854
2017	72.956901550293