Year	% of cohort
1960	29.672268271450942
1961	29.91767675609514
1962	30.724001928841727
1963	30.813268804228322
1964	31.313082749244426
1965	31.44374283891464
1966	31.424764749033088
1967	31.340404554786264
1968	32.00525747910229
1969	32.314116721142256
1970	33.179404467602694
1971	33.80365059566012
1972	33.977660835733694
1973	35.142457323634375
1974	35.42583140143312
1975	35.9465763566022
1976	36.695302135173804
1977	37.22807962755554
1978	37.434779042013766
1979	38.118350939278045
1980	38.616834779934784
1981	39.10427483380694
1982	39.30080014421532
1983	38.09125623951158
1984	37.807855765286625
1985	38.00291099327056
1986	38.38680900613655
1987	38.44093436762401
1988	37.94591299958813
1989	39.02167685112454
1990	38.5950079155613
1991	38.44309050932149
1992	37.91094053250703
1993	37.97378324501158
1994	38.76157581138446
1995	38.50324226802821
1996	38.16371280606369
1997	38.32977472307958
1998	37.583199794628534
1999	38.534024853709326
2000	39.84616719632368
2001	40.14190899506294
2002	40.46994861391096
2003	41.08044926397811
2004	41.70240338692041
2005	42.522265293870056
2006	43.66000001850505
2007	44.50020707402376
2008	45.35112122405577
2009	46.39916242425854
2010	47.37110974214884
2011	48.39874079320439
2012	49.29584600298014
2013	50.006139001798566
2014	50.702460267122326
2015	51.337577151253384
2016	52.20148548781785
2017	52.85642210339352
2018	53.429028884727785
2019	54.056731075833525
2020	52.520336424879666
2021	50.76557033180101
2022	51.925299706998246