Year	% of cohort
1960	76.122515
1961	76.702374
1962	76.326553
1963	76.458077
1964	76.575225
1965	76.805656
1966	76.903346
1967	76.636385
1968	76.77103
1969	76.528894
1970	77.075867
1971	76.714452
1972	76.842474
1973	77.038779
1974	76.933294
1975	76.898796
1976	76.76862
1977	76.976953
1978	77.120952
1979	77.214258
1980	77.506428
1981	78.220871
1982	78.697055
1983	79.236374
1984	79.622551
1985	79.673545
1986	80.145554
1987	80.254659
1988	80.296414
1989	81.402403
1990	81.602122
1991	81.629783
1992	82.421914
1993	82.940151
1994	83.501713
1995	83.879933
1996	84.516345
1997	84.725353
1998	85.146652
1999	85.497332
2000	85.912154
2001	85.943937
2002	86.397099
2003	86.719988
2004	87.01439
2005	87.249507
2006	87.499499
2007	87.577337
2008	87.830775
2009	88.148438
2010	88.374404
2011	88.797771
2012	88.997015
2013	89.031725
2014	89.319714
2015	89.317072
2016	89.547773
2017	89.77459
2018	89.9381
2019	90.56354
2020	90.047059
2021	90.137552
2022	91.077619