Year	% of cohort
1960	37.318894980289706
1961	37.743450546944686
1962	38.33147214269433
1963	38.81697154134688
1964	39.34738722727641
1965	37.9752895552866
1966	38.681109205166074
1967	39.11339211218451
1968	41.19009333625081
1969	41.6532806805519
1970	41.544799889209344
1971	38.06774391364456
1972	43.34935538446374
1973	44.048270664191676
1974	44.759698811266865
1975	45.523131535952295
1976	46.090453127822585
1977	46.43825754440973
1978	46.83235040612813
1979	47.16811598530594
1980	47.66478360865023
1981	48.29185095384413
1982	48.93518749800526
1983	49.708513209097056
1984	50.39348299339487
1985	51.14424065622803
1986	51.964248421352345
1987	52.449690894299735
1988	52.93207970197967
1989	53.40396953896782
1990	54.08099483506614
1991	54.26762922079461
1992	55.12636570663289
1993	55.60195680289491
1994	56.07573932961417
1995	56.499141268825255
1996	56.97278839521496
1997	57.48867737325949
1998	58.23941824758094
1999	59.10889160402039
2000	59.398006665276554
2001	59.89815634270066
2002	60.5682972209675
2003	61.190666636057976
2004	61.6929121608073
2005	62.2211793238445
2006	62.78906030904452
2007	63.006051943912446
2008	63.27846702454865
2009	63.59143772044284
2010	64.23607501539136
2011	64.70263665967504
2012	65.33217238838593
2013	65.98831145256575
2014	66.89337957417146
2015	67.725859304045
2016	68.44706776825944
2017	68.94759803063849
2018	69.34173420411892
2019	69.57883452464297
2020	68.02290123611878
2021	62.94459947839347
2022	64.38743215767872