Year	% of cohort
1960	79.18216607421866
1961	79.80228106103792
1962	79.7932150309712
1963	80.03865804832354
1964	80.83385484494391
1965	81.05202960870895
1966	81.41546693098493
1967	81.66791553826846
1968	81.7473446886132
1969	81.46832838341076
1970	82.23257233864801
1971	82.51428275193472
1972	82.98650230885863
1973	83.26799276845422
1974	83.76538310260737
1975	83.93172430778428
1976	84.33989190784341
1977	84.94061687533467
1978	85.17946280779088
1979	85.55685892808255
1980	85.78021729723818
1981	86.06557979360417
1982	86.41406781938072
1983	86.53575162070736
1984	86.9788299618624
1985	87.2369933361303
1986	87.48802432527776
1987	87.79661745068208
1988	88.03854579072109
1989	88.26895383943352
1990	88.38110264140784
1991	88.4803141124367
1992	88.84640135812819
1993	88.92018420126534
1994	89.21004743387377
1995	89.38406132736384
1996	89.61521543427696
1997	89.90756741492285
1998	90.1119330561329
1999	90.3167418282692
2000	90.50301376269121
2001	90.68563488973632
2002	90.795309476373
2003	90.89377711895698
2004	91.24763665883229
2005	91.34091405194215
2006	91.56649700194953
2007	91.64856609746462
2008	91.71980309672577
2009	91.80928901283811
2010	92.0081915912855
2011	92.06329532300389
2012	92.2089473275319
2013	92.3052182130248
2014	92.51835014992304
2015	92.41421289110451
2016	92.56076405642253
2017	92.58714704774742
2018	92.64791121205006
2019	92.83548154847615
2020	92.73903710979062
2021	92.60599702266408
2022	92.99287459739183