Year	% of cohort
1960	67.887522
1961	70.67217
1962	70.615992
1963	71.275498
1964	71.005436
1965	72.460947
1966	72.815741
1967	72.329258
1968	72.450818
1969	73.254132
1970	74.310701
1971	74.800283
1972	74.299022
1973	74.626549
1974	75.499789
1975	75.243886
1976	75.452699
1977	75.501169
1978	76.612891
1979	77.08406
1980	76.954996
1981	77.726359
1982	78.242616
1983	78.712903
1984	79.139849
1985	79.864602
1986	80.424002
1987	80.154423
1988	81.079296
1989	81.219994
1990	81.489275
1991	81.614352
1992	81.42352
1993	82.014298
1994	82.156236
1995	82.123251
1996	82.177814
1997	82.767279
1998	82.609915
1999	82.663865
2000	82.550195
2001	83.128352
2002	83.246052
2003	83.279254
2004	83.447687
2005	83.641588
2006	83.7676
2007	83.46241
2008	83.886112
2009	83.980547
2010	84.355571
2011	84.198941
2012	83.971292
2013	84.797663
2014	84.780123
2015	84.440289
2016	85.274824
2017	84.925894
2018	85.683886
2019	85.745314
2020	84.970477
2021	83.301394
2022	84.229861