Year	% of cohort
1975	57.7776298522949
1976	63.6377182006836
1992	80.7732620239258
1993	84.581298828125
1994	83.258056640625
1995	85.4087600708008
1996	84.9841384887695
1998	88.1404190063477
1999	88.0503387451172
2000	87.3464202880859
2001	89.7110290527344
2002	92.1523666381836
2003	91.8189163208008
2004	93.2940673828125
2005	93.5390930175781
2006	93.803352355957
2007	93.151481628418
2008	95.2065963745117
2009	95.1967926025391
2010	95.8501663208008
2011	96.1780700683594
2012	94.8861312866211
2013	96.1253128051758
2014	96.5039978027344
2015	91.6494674682617
2016	99.7343597412109
2017	96.4175186157227
2018	97.5046997070312
2019	97.5101699829102
2020	98.3959732055664
2021	97.948486328125