Year	% of cohort
1960	42.74076876616238
1961	46.211152258830076
1962	51.21035504097075
1963	51.89506174605271
1964	52.694395769085695
1965	52.52044815608029
1966	53.36920393851482
1967	54.09564857741541
1968	55.047330632956694
1969	55.624332215753896
1970	56.30561574403546
1971	57.19498603425132
1972	57.912229285523146
1973	58.95023086743969
1974	59.902322745925034
1975	60.86093185836131
1976	61.69144149457814
1977	62.670543940694245
1978	63.50301354559785
1979	64.36451616264301
1980	65.14748613094203
1981	65.97663520593323
1982	66.75987276328226
1983	67.5411876538347
1984	68.15741143868657
1985	68.79233681051674
1986	69.65723797583041
1987	70.21468165787292
1988	70.72431441520348
1989	71.29782005241124
1990	71.61025055718505
1991	71.89656612327602
1992	72.48079405405028
1993	72.93625812155959
1994	73.20708615872951
1995	73.7403268295241
1996	74.11858676403538
1997	74.62912571178502
1998	75.21608902377258
1999	75.45681453313996
2000	76.07182525416626
2001	76.86988416334582
2002	77.33197138033432
2003	77.76751354106895
2004	78.09601109884399
2005	78.83245006074247
2006	79.39127390113973
2007	79.84534446318771
2008	80.11007588889788
2009	80.68084348624086
2010	81.03636122880835
2011	81.45091558394796
2012	81.82558408519184
2013	82.14365771158532
2014	82.4745685620103
2015	82.70482387033567
2016	82.9779390210931
2017	83.27102982153505
2018	83.58479126189313
2019	83.8372487788633
2020	82.61829266873336
2021	80.3954712900695
2022	81.32192766964683