Year	% of cohort
1960	27.54756088974497
1961	32.78647707835491
1962	40.81968943483882
1963	41.69425786976307
1964	42.85355107347244
1965	42.438012919466466
1966	44.648323282422695
1967	46.13450657642005
1968	46.90488409955929
1969	48.057880365154084
1970	49.15119511828415
1971	50.752544375787636
1972	51.70755633101719
1973	53.194041918664546
1974	54.08938527256116
1975	55.46478162467128
1976	56.7567034554561
1977	57.745821355878135
1978	58.64630872686632
1979	59.66699410346028
1980	60.4358125513809
1981	61.39454004394153
1982	62.18657081123439
1983	62.7938313290793
1984	63.60344565425685
1985	64.29655296920286
1986	64.87469820902103
1987	65.48515078115733
1988	65.9492261447915
1989	66.52580731994018
1990	66.99999497026505
1991	67.65337520525107
1992	68.40370869525138
1993	68.97006764400216
1994	69.49524861696757
1995	69.84540386657409
1996	70.27827672003923
1997	70.89046088253639
1998	71.34615198667439
1999	71.81705514435363
2000	72.29620027507048
2001	72.83932660986343
2002	73.38599998896161
2003	73.88309163736484
2004	74.07161849725586
2005	74.73723648566111
2006	75.25403348512921
2007	75.5635304215384
2008	75.55552133395238
2009	76.19217915442837
2010	76.51990768211887
2011	76.8324429350327
2012	77.13185935910506
2013	77.44224736405378
2014	77.85455772040595
2015	78.10314761060118
2016	78.30045788919182
2017	78.21589128405488
2018	78.92209127964436
2019	79.22934760550737
2020	78.98485191656646
2021	78.36399403278203
2022	79.27510013364754