Year	% of cohort
1960	71.102957
1961	71.770046
1962	71.73821
1963	72.145643
1964	72.074676
1965	72.451119
1966	72.878862
1967	73.236889
1968	73.274821
1969	73.254139
1970	74.303132
1971	73.907298
1972	74.555549
1973	75.227529
1974	75.820255
1975	76.612458
1976	76.923334
1977	77.926399
1978	78.068684
1979	78.407583
1980	78.372363
1981	79.151022
1982	79.023085
1983	79.227902
1984	79.082242
1985	79.180086
1986	79.678327
1987	80.136924
1988	80.598524
1989	81.022233
1990	81.265689
1991	82.095527
1992	82.13941
1993	82.360993
1994	82.435609
1995	82.627283
1996	82.786052
1997	82.785325
1998	83.105755
1999	83.346809
2000	83.594111
2001	84.005251
2002	84.557491
2003	83.555312
2004	84.54694
2005	85.035419
2006	85.245892
2007	85.017297
2008	85.503738
2009	85.687583
2010	85.455765
2011	86.043442
2012	86.783177
2013	86.836919
2014	87.020073
2015	87.294176
2016	86.855301
2017	87.388787
2018	87.744382
2019	88.20058
2020	85.499563
2021	85.105289
2022	86.051875