Year	% of cohort
1971	65.0190124511719
1972	64.6660614013672
1973	63.8246688842773
1974	63.7497901916504
1975	65.3483963012695
1976	66.3501586914062
1977	67.7762680053711
1978	67.5148010253906
1979	67.6080703735352
1980	67.2482604980469
1981	67.8427734375
1982	67.9060211181641
1983	68.3959579467773
1984	68.0903701782227
1985	68.9166717529297
1986	70.365966796875
1987	72.6865234375
1988	72.9884872436523
1989	73.0626373291016
1990	74.6378631591797
1991	75.0036773681641
1992	75.2218933105469
1993	76.0329895019531
1994	76.4672164916992
1995	77.4357070922852
1996	77.7738800048828
1997	77.7926025390625
1998	77.3349533081055
1999	77.5321197509766
2000	76.4965667724609
2001	77.2807769775391
2002	77.5477523803711
2003	77.7239685058594
2004	78.1786575317383
2005	78.7149505615234
2006	79.748046875
2007	80.4143905639648
2008	82.3234329223633
2009	83.5309524536133
2010	84.3515396118164
2011	85.0393676757812
2012	85.4562911987305
2013	86.1211929321289
2014	90.3446731567383
2015	89.6606597900391
2016	90.1846466064453
2017	90.1289291381836
2018	90.1834182739258
2019	93.9067916870117
2020	94.3582611083984
2021	94.7390518188477