Year	% of cohort
1960	48.662686395822064
1961	49.297827783001814
1962	50.66569369131558
1963	51.432165304565395
1964	52.51238043551906
1965	52.76591342153232
1966	53.14264473295059
1967	53.589972736397634
1968	54.150167915197976
1969	54.44062053361822
1970	54.65827439583784
1971	54.86317122738237
1972	55.103048468247955
1973	55.342140108501006
1974	55.911878861958144
1975	56.35353575489458
1976	56.71396634441084
1977	56.94407493108991
1978	57.30566435182502
1979	57.649742055638896
1980	58.08856916011203
1981	58.648383952150304
1982	59.19084164647433
1983	59.133292797289045
1984	59.83771669553978
1985	59.833659678166136
1986	59.59744725295465
1987	59.733724636805995
1988	59.92529529940711
1989	60.22027507293514
1990	60.49244903078589
1991	60.45421538027375
1992	60.85130371237007
1993	61.31457816725668
1994	61.514812322528286
1995	61.229468792428314
1996	61.17661344459304
1997	61.337494498085164
1998	61.65650772348385
1999	61.96660302843652
2000	62.24798472154745
2001	62.376383126666035
2002	62.404512231930696
2003	62.373410442575995
2004	63.036851743140545
2005	63.60845761694096
2006	64.2680633757142
2007	65.00653652825903
2008	65.4117040410553
2009	65.83809478767772
2010	66.05890844436443
2011	66.20678399006266
2012	66.39193727948698
2013	66.45356620274262
2014	66.69907243017349
2015	67.13096379807008
2016	67.64964063870772
2017	68.02256634315187
2018	68.36136337733522
2019	68.06471648979299
2020	67.38353207703878
2021	63.77226125661451
2022	64.75078581841836