Year	% of cohort
1960	57.399311
1961	58.520121
1962	60.002344
1963	61.472652
1964	62.93414
1965	64.370337
1966	65.724087
1967	66.913781
1968	67.71813
1969	68.3482
1970	68.667178
1971	68.931772
1972	69.271325
1973	70.008127
1974	71.004673
1975	72.41814
1976	74.044919
1977	75.470057
1978	76.790116
1979	77.816149
1980	78.604899
1981	79.234173
1982	79.820046
1983	80.285336
1984	80.760259
1985	81.052439
1986	81.270293
1987	81.424543
1988	81.558998
1989	81.718848
1990	81.882401
1991	81.943629
1992	81.991243
1993	82.331943
1994	82.40128
1995	82.597981
1996	82.77022
1997	82.892269
1998	82.918008
1999	82.930642
2000	82.810082
2001	82.781329
2002	83.187431
2003	83.737047
2004	84.171301
2005	85.201556
2006	85.663996
2007	86.360764
2008	86.663566
2009	86.408649
2010	86.448821
2011	85.566899
2012	85.105834
2013	84.728567
2014	84.40162
2015	84.263033
2016	84.262495
2017	84.306582
2018	84.383531
2019	84.528306
2020	84.683319
2021	84.795344
2022	85.245768