Year	% of cohort
1960	72.028479
1961	72.915197
1962	73.757429
1963	69.881694
1964	70.608074
1965	75.659998
1966	76.127493
1967	76.892209
1968	77.04129
1969	77.348609
1970	77.973508
1971	78.434727
1972	79.344954
1973	79.541333
1974	75.454683
1975	79.743947
1976	80.313165
1977	80.76402
1978	81.302778
1979	81.364544
1980	81.527308
1981	81.453128
1982	81.640466
1983	81.687923
1984	81.605807
1985	82.305429
1986	81.903888
1987	82.929561
1988	83.128173
1989	83.649049
1990	83.469057
1991	83.695611
1992	84.713324
1993	85.573491
1994	85.378961
1995	86.263699
1996	86.834614
1997	87.35731
1998	87.936043
1999	87.908113
2000	88.153718
2001	88.702783
2002	89.38048
2003	89.758252
2004	89.872164
2005	90.04336
2006	90.253412
2007	90.69108
2008	90.83539
2009	91.315843
2010	91.529537
2011	91.748227
2012	91.565753
2013	91.785574
2014	92.077416
2015	92.272391
2016	92.596703
2017	92.844934
2018	92.646764
2019	92.870202
2020	92.971184
2021	92.733778
2022	93.097807