Year	% of cohort
1960	42.43936593628017
1961	43.06278766457828
1962	44.01255265694453
1963	44.822268555324364
1964	45.238210664476874
1965	46.5817846869096
1966	47.06076332667143
1967	47.86605420817621
1968	48.27685343001827
1969	48.129455297483304
1970	48.63364712933547
1971	49.07006948324258
1972	49.25055215668212
1973	48.688638957805715
1974	49.78564140968169
1975	49.764568127074774
1976	50.420716116590725
1977	50.72234124714226
1978	51.319228192487316
1979	52.01871038782726
1980	51.96757523343215
1981	52.15362357755013
1982	52.312764894039425
1983	53.034535718926165
1984	53.86262989365053
1985	54.818017551179196
1986	54.94714731414005
1987	55.407971121223056
1988	55.97193381123598
1989	56.33329372808849
1990	56.826659305730644
1991	57.30818983301135
1992	57.77434644969966
1993	58.236474974574115
1994	58.62659635951746
1995	59.1122516996086
1996	59.68983561161297
1997	60.030149458303704
1998	60.40204003077403
1999	60.64795911761262
2000	60.455021480515896
2001	60.81464450771344
2002	60.332153418415814
2003	61.172687962964595
2004	61.678964441370994
2005	62.054574995719335
2006	62.593950123149156
2007	62.65906102481971
2008	62.92429155428246
2009	62.89894923314284
2010	63.56482044563944
2011	63.81666201574555
2012	64.09820316003258
2013	64.02583416658574
2014	64.10162060726373
2015	63.705744547437895
2016	64.59910609640048
2017	65.32989761464539
2018	65.59488615169431
2019	65.8312939542645
2020	66.11267134717738
2021	65.66496950438912
2022	66.34091988861339