Year	% of cohort
1960	41.84003350661799
1961	43.94492897958951
1962	46.760910780564615
1963	47.28676857979485
1964	48.0720609005541
1965	47.65695001183827
1966	48.592551085202544
1967	49.17431879561396
1968	49.81037427735267
1969	50.18939935976994
1970	50.743654810416864
1971	50.81281894421227
1972	52.29288795395258
1973	53.136879259529344
1974	53.774104629649386
1975	54.47044228030989
1976	55.14362951230733
1977	55.74732023693678
1978	56.19020277096946
1979	56.77432354970209
1980	57.198582507826764
1981	57.79778803786214
1982	58.382028604221844
1983	58.80262977711042
1984	59.35307094985697
1985	59.927765724070056
1986	60.65830688254076
1987	61.1049230131354
1988	61.36971346867941
1989	61.87330509611762
1990	62.09596265495476
1991	62.41779290011703
1992	62.779048834885366
1993	62.929034418048545
1994	63.28999394103239
1995	63.548628116155314
1996	64.04154026457029
1997	64.62630662128738
1998	65.03073617288625
1999	65.4479746653303
2000	65.85063756842186
2001	66.25397263090939
2002	66.66839581036132
2003	67.0393011675617
2004	67.43615571641315
2005	67.94135184764112
2006	68.50111996762786
2007	68.8563492531976
2008	69.08784536002452
2009	69.62244501497581
2010	70.01175022926743
2011	70.4559261735181
2012	70.8331487944646
2013	71.22048873432973
2014	71.72122005139772
2015	72.07618955939695
2016	72.40570097946957
2017	72.66352716269367
2018	73.06549300283261
2019	73.34222775637842
2020	71.66666496851579
2021	69.52945011370858
2022	70.86263212137202