Year	% of cohort
1960	31.65283270229955
1961	34.49259644044318
1962	38.752005804533745
1963	39.4141724538262
1964	40.245761398950286
1965	39.69677864392473
1966	41.00239842378512
1967	41.83466620155613
1968	42.92941176246217
1969	43.69240586468334
1970	44.31557579223204
1971	44.30747636736815
1972	46.34477283476499
1973	47.466159961515885
1974	48.18683252923695
1975	49.154346053303485
1976	50.040407815534586
1977	50.80227674838465
1978	51.435692751823865
1979	52.17864169777912
1980	52.82601831153006
1981	53.430043801347495
1982	54.08104486198476
1983	54.71141486929042
1984	55.41818911524835
1985	56.106925748057755
1986	56.82591289587129
1987	57.37034403593423
1988	57.723268381714476
1989	58.393510835038775
1990	58.689964633458416
1991	59.1197639720624
1992	59.620746669358006
1993	60.03488740335968
1994	60.55058554721913
1995	60.83373171015482
1996	61.215922976718964
1997	61.71907262022382
1998	62.142977374679006
1999	62.74899173888122
2000	63.22475653247877
2001	63.69538498250342
2002	64.21272253200912
2003	64.68811853780036
2004	65.04871107036863
2005	65.65509833023908
2006	66.19176744286084
2007	66.51009847368331
2008	66.73069979317302
2009	67.28578854786562
2010	67.6921439637843
2011	68.15218077013796
2012	68.5499817443988
2013	68.96807114542568
2014	69.54388297478853
2015	69.96281696056043
2016	70.33284350240453
2017	70.57729661862224
2018	71.05525979372531
2019	71.33277292823972
2020	69.64773612066487
2021	67.28674387641675
2022	68.70028023016205