Year	% of cohort
1960	49.09215767522404
1961	50.599329437471006
1962	52.15254915586403
1963	53.43172651961328
1964	54.09541287523828
1965	55.95353569454479
1966	56.909110308581425
1967	57.829786367295405
1968	58.72476274751853
1969	59.22323572053984
1970	59.950381734355176
1971	60.59585164644042
1972	61.13372354485447
1973	60.92767533851061
1974	61.85404085004534
1975	61.91160163366842
1976	63.10529558763352
1977	63.512827077503566
1978	64.27513304726126
1979	65.00570612722228
1980	64.81454049003176
1981	64.8817106082729
1982	65.18797685671217
1983	66.11692771842758
1984	67.0667369929807
1985	67.93219996174057
1986	68.26705027902307
1987	68.73516679036635
1988	69.34255986891122
1989	69.52357520987225
1990	69.88915034753484
1991	70.11852389165641
1992	70.41776980515007
1993	70.64098582003318
1994	71.00000435158306
1995	71.30743730157327
1996	71.58834250494337
1997	71.74961887194912
1998	72.1534377627937
1999	72.25371229910445
2000	72.02501785979963
2001	72.14912864705603
2002	71.50349155422472
2003	72.05608113128905
2004	72.26564229031361
2005	72.42736696531725
2006	72.59591452265326
2007	72.439661903215
2008	72.75503524386129
2009	72.5317503617952
2010	73.15835161949953
2011	73.425175286349
2012	73.38035443932579
2013	73.43509529762098
2014	73.46444882906127
2015	73.27896317548142
2016	73.69016654670293
2017	74.26817481963313
2018	74.43213469839712
2019	74.56616414352949
2020	74.675055016422
2021	74.26347698713269
2022	75.44174095012903