Year	% of cohort
1960	60.018858046675625
1961	60.33470792265914
1962	60.816552941250755
1963	61.01480434322891
1964	61.82281547116083
1965	62.74247338190786
1966	63.0930045869184
1967	63.48016636796619
1968	63.882722863607604
1969	64.05841982439823
1970	64.72756464157158
1971	65.24373547714912
1972	65.74133683876101
1973	66.05192322605112
1974	66.05966036457872
1975	65.7464265771245
1976	66.29943219685546
1977	66.64766973678846
1978	66.6861982100584
1979	67.0535697612564
1980	68.25747281859942
1981	68.53866619697378
1982	68.96094693863304
1983	69.27237667300348
1984	69.91578069401149
1985	70.29620123655653
1986	70.82339319120534
1987	71.39883987915923
1988	71.87073258789609
1989	72.41707725104592
1990	72.77074247925708
1991	72.85144411206322
1992	72.99771565650917
1993	73.05680235233866
1994	72.61853493259807
1995	72.87819090199523
1996	72.89433973416294
1997	72.9479824868469
1998	72.62980949250563
1999	72.29305995892177
2000	73.42401505614247
2001	73.84360062355509
2002	73.8762546601025
2003	73.98363075984432
2004	74.28259222139926
2005	74.7088647395459
2006	75.18277566199792
2007	75.78695753915774
2008	76.25584730031
2009	76.68585438968564
2010	77.49675813403353
2011	78.02956289135525
2012	78.49540737802256
2013	79.26135855849054
2014	79.99894072831619
2015	80.54341073954372
2016	81.11660372265526
2017	81.77321420828008
2018	82.11352158310375
2019	82.46907040323615
2020	81.98277893604016
2021	81.03229565071028
2022	81.47686219490153