Year	% of cohort
1960	73.107104
1961	73.054792
1962	72.041824
1963	75.000017
1964	76.282107
1965	75.879826
1966	77.845827
1967	76.088037
1968	76.25226
1969	75.003752
1970	76.289567
1971	76.474494
1972	77.567653
1973	76.503722
1974	78.500795
1975	78.569327
1976	78.646888
1977	78.560844
1978	79.294987
1979	78.877632
1980	78.208203
1981	79.052412
1982	79.562895
1983	79.402081
1984	80.035092
1985	79.451639
1986	80.112412
1987	79.258887
1988	79.623727
1989	80.223477
1990	80.894717
1991	81.057466
1992	80.672193
1993	80.987233
1994	81.232016
1995	81.25871
1996	80.074382
1997	81.033268
1998	81.609389
1999	81.901006
2000	82.798369
2001	82.895288
2002	81.905495
2003	80.115569
2004	79.440076
2005	81.050056
2006	82.414122
2007	84.083473
2008	85.901322
2009	86.489246
2010	86.149203
2011	86.472377
2012	86.292165
2013	86.865245
2014	86.91262
2015	86.769664
2016	87.500569
2017	88.688399
2018	89.116916
2019	89.507445
2020	89.047054
2021	87.195469
2022	86.859445