Year	% of cohort
1960	66.8684670775301
1961	67.48806988237396
1962	67.06966558236924
1963	67.0931130551928
1964	68.02855958268037
1965	68.05845327138285
1966	68.5229356286128
1967	68.68625868250933
1968	68.57891030109016
1969	67.9348811014137
1970	69.06138203100357
1971	69.17910309401695
1972	69.67826017044348
1973	70.02008883800318
1974	70.42518142653289
1975	70.3113261946574
1976	70.70063487510069
1977	71.40480518657577
1978	71.52919214081756
1979	71.98297734926847
1980	72.20954904242281
1981	72.65037397428837
1982	73.2000994945123
1983	73.26468816919505
1984	73.83125499714656
1985	74.18481507311309
1986	74.738065453417
1987	75.24101242936872
1988	75.582124124496
1989	75.82609907750081
1990	75.93174971106262
1991	75.90950053203908
1992	76.5073334797587
1993	76.86457142559172
1994	77.38893721775547
1995	77.7371493371066
1996	78.3368531724325
1997	79.1540018661174
1998	79.62009022156047
1999	80.01771924856473
2000	80.49576639120174
2001	80.87815021689558
2002	81.22775937318096
2003	81.49541865305406
2004	82.28328678156035
2005	82.50857416580612
2006	82.94853667791281
2007	83.21141270535766
2008	83.57128620201802
2009	83.87065019191112
2010	84.26949736822347
2011	84.66046948286541
2012	84.9238194822547
2013	85.2868255351555
2014	85.69718022567126
2015	85.60466366044743
2016	85.98229999715026
2017	86.21495586367402
2018	86.36528429791375
2019	86.7760786176296
2020	86.35535446427225
2021	86.07966155518386
2022	86.92981228016596