Year	% of cohort
1960	41.525204238461434
1961	42.06120213441865
1962	42.60379703314697
1963	43.18912379837828
1964	43.94045612765518
1965	42.76751288413503
1966	43.90489657077671
1967	44.954490709264384
1968	46.36395154950455
1969	46.969017442336316
1970	46.81087473827739
1971	46.72598292914182
1972	48.689648138110364
1973	49.42752114559452
1974	50.08976085446038
1975	50.78790804663795
1976	51.65573574138329
1977	52.72870883803101
1978	53.63064666095078
1979	54.692288385870235
1980	55.651551993100476
1981	56.502460083179784
1982	57.367775736723125
1983	58.14466488360085
1984	58.96785560574021
1985	59.702105791226764
1986	60.41076006776261
1987	61.17051896022214
1988	61.83982179892381
1989	62.39823535943216
1990	62.94499573301678
1991	63.36494174205256
1992	64.08474239363369
1993	64.4276663552812
1994	64.75085035717629
1995	65.26884585970302
1996	65.61970393598558
1997	66.38496223425136
1998	67.06130406133558
1999	67.7915449330558
2000	68.3305652058929
2001	68.90107435444132
2002	69.5593625818852
2003	70.13357798937452
2004	70.41309685225335
2005	71.34705216277004
2006	72.15684672900511
2007	72.71396192556405
2008	73.04724525182004
2009	73.9123272498079
2010	74.4346343261221
2011	75.07141432114001
2012	75.57816947671982
2013	76.08188297166899
2014	76.41343344709762
2015	76.75163813700506
2016	77.1302909684893
2017	77.557620486805
2018	78.00266274170994
2019	78.40073484128064
2020	76.8034130515304
2021	73.8217009763405
2022	75.41935525635925