Year	% of cohort
1960	25.96633420981132
1961	26.34903501505918
1962	27.587542289679536
1963	27.90462206449502
1964	28.1279267058371
1965	28.579935715411604
1966	28.838210362950953
1967	27.541277438485164
1968	28.532074228812032
1969	28.928031073500147
1970	30.421166834261136
1971	31.156633431584527
1972	32.083893764666655
1973	32.94483985510487
1974	33.75869495127897
1975	34.632236643803495
1976	35.64496064251233
1977	36.50073416636607
1978	37.05582817499469
1979	37.495040345818886
1980	37.821656296257856
1981	38.20836617608386
1982	38.409524895291625
1983	38.74407230587077
1984	38.8938847837126
1985	38.852860609323514
1986	38.857882576128276
1987	38.85013426338648
1988	39.311961838427926
1989	39.513311812500255
1990	39.142505937624165
1991	39.119226930789694
1992	39.09348709667885
1993	39.19588589697026
1994	38.829176276112115
1995	38.847995684149275
1996	38.890853591702964
1997	39.05077134575721
1998	39.55883417490621
1999	40.0974456146714
2000	40.851669060432656
2001	41.27353502958412
2002	41.6608956117205
2003	42.23422062954939
2004	42.8128943782619
2005	43.54324296070321
2006	44.298151527173836
2007	44.833907737056066
2008	45.51115051173345
2009	46.23690621884967
2010	46.82657279351375
2011	47.48260514159668
2012	47.92648815469461
2013	48.36679937372127
2014	48.6826582437792
2015	49.03609577572073
2016	49.827003248107175
2017	50.09984410791356
2018	50.56738948368444
2019	50.98632600314245
2020	49.34627689504316
2021	48.53145076145587
2022	50.11266997636696