Year	% of cohort
1960	28.884314475147963
1961	29.190829272452213
1962	30.225997114706615
1963	30.17962321403527
1964	30.717404275906283
1965	30.820698748985226
1966	30.802764080779635
1967	31.586113024005176
1968	32.04404362466744
1969	32.32263234499475
1970	32.72857765591589
1971	33.08363641862311
1972	32.83611497356819
1973	33.97702971270257
1974	34.07846774750473
1975	34.562332898212055
1976	35.34037253915328
1977	35.80626436002356
1978	35.816374416199494
1979	36.33233142669382
1980	36.965169538481014
1981	37.335313684145
1982	37.47716369795639
1983	35.71845134411271
1984	35.067385405875335
1985	35.521413472861056
1986	36.53035286840019
1987	37.04412943101321
1988	36.768774643697185
1989	38.41818895339955
1990	38.193802405817635
1991	38.47360745405507
1992	38.24859177487092
1993	39.07497807713312
1994	40.1375715263337
1995	40.302941041540784
1996	40.290233618078325
1997	40.73900657373076
1998	39.84193002517836
1999	41.26912673133578
2000	43.02516134052748
2001	43.583448302092236
2002	44.162926192873755
2003	44.94723299112978
2004	45.56850532207962
2005	46.42653457763718
2006	47.70297051839403
2007	48.5382552850246
2008	49.36043786069002
2009	50.40663428651098
2010	50.83105447123525
2011	52.16932199476789
2012	53.02284770646864
2013	53.73502589380108
2014	54.50786877932288
2015	55.15814570943344
2016	55.97126686563949
2017	56.57210822873219
2018	57.06907507523288
2019	57.64478164597824
2020	55.69190736709616
2021	54.221758069279744
2022	55.281545165247