Year	% of cohort
1960	38.112771137806746
1961	41.62226436089179
1962	46.71853983811491
1963	47.365792864646075
1964	48.20413636229202
1965	48.110558126753986
1966	49.09664922192974
1967	49.979369263595316
1968	51.05129355286118
1969	51.80933324799724
1970	52.26985521457269
1971	52.81561808547397
1972	54.30538623832764
1973	55.43256783654544
1974	56.34322770185911
1975	57.349830438212265
1976	58.273004044030394
1977	59.37389563195992
1978	60.31744040347377
1979	61.30047733644479
1980	62.18969212153286
1981	63.060056800898735
1982	63.85624632326045
1983	64.6915537917085
1984	65.39362954776948
1985	66.00320896206453
1986	66.69532571387639
1987	67.25903371649342
1988	67.77331690158506
1989	68.27069397410477
1990	68.62788267753288
1991	68.7908017116892
1992	69.46121483189276
1993	69.92285605398675
1994	70.20469409885949
1995	70.67582470723715
1996	70.96311855948511
1997	71.53966643964094
1998	72.16832645892265
1999	72.57795793747574
2000	73.12335101841114
2001	73.89470413464643
2002	74.39741279117771
2003	74.89548599283195
2004	75.17194617194201
2005	75.91068032222796
2006	76.5107661117316
2007	76.91134149509743
2008	77.0774176342614
2009	77.75297044347991
2010	78.16562269623552
2011	78.65063267256272
2012	79.07774829986508
2013	79.45803512905297
2014	79.77864558295869
2015	80.01080643961897
2016	80.27779286312771
2017	80.5947587091536
2018	80.88463221147681
2019	81.14410842909501
2020	80.0019516289993
2021	77.94578642046237
2022	79.0058383333342