Year	% of cohort
1960	41.74988650247658
1961	44.74280963829757
1962	48.99909165754198
1963	49.6298016575415
1964	50.45681399716646
1965	50.34459010968056
1966	51.165743389492135
1967	51.90421440346088
1968	52.82687016054094
1969	53.39528164860402
1970	53.8167376677945
1971	54.31347237354889
1972	55.55004981706461
1973	56.54203333127939
1974	57.34021756265186
1975	58.166017538661286
1976	58.985818629302585
1977	59.951969034631794
1978	60.76766236117883
1979	61.60133888152377
1980	62.367541403171984
1981	63.16224233547384
1982	63.874026887741024
1983	64.46947829100297
1984	65.03700627390526
1985	65.575466466047
1986	66.34855645534174
1987	66.87206122697218
1988	67.2730193267877
1989	67.82023055542781
1990	68.10977346635461
1991	68.2288250382628
1992	68.76157519002298
1993	69.11746307319156
1994	69.3812227925399
1995	69.81079296657899
1996	70.08884784703416
1997	70.64738591294814
1998	71.19735803256928
1999	71.60533010350385
2000	72.1373584971379
2001	72.84467023102204
2002	73.30462217697927
2003	73.76275299298001
2004	74.06534873317007
2005	74.78152908109743
2006	75.41828576037427
2007	75.86958527292045
2008	76.07177464598722
2009	76.75815132548962
2010	77.15599592363151
2011	77.66854947622741
2012	78.0734025695753
2013	78.46510488187849
2014	78.78794880113898
2015	79.05174638621658
2016	79.36863335325232
2017	79.70048396212701
2018	80.00885467337498
2019	80.2823194864272
2020	79.01589632485545
2021	77.05713312079995
2022	78.07666059327559