Year	% of cohort
1960	37.24584610938527
1961	37.690979465924535
1962	38.32538391002231
1963	38.669827237624574
1964	39.21784283825914
1965	38.3535180674252
1966	38.949300633003794
1967	39.132050416036655
1968	40.48438221135515
1969	41.04354368463198
1970	41.069553390317
1971	38.84706483421804
1972	42.443587999796094
1973	43.31660100969081
1974	43.92087884650148
1975	45.04722442884747
1976	45.713670235177844
1977	46.28356120747617
1978	46.709785765061625
1979	47.16660693248432
1980	47.79064825399809
1981	48.401693997867916
1982	48.90944589028139
1983	49.58996760653631
1984	50.215924810156025
1985	50.849493537703374
1986	51.43483330318321
1987	51.934538017595365
1988	52.336499453933435
1989	52.80010464388983
1990	53.294577842423536
1991	53.52674208535618
1992	54.073885299536116
1993	54.407995846667376
1994	54.78743914978682
1995	55.18204912448567
1996	55.54899012358437
1997	55.98661570239458
1998	56.59247241813792
1999	57.29126285101174
2000	57.61595209421572
2001	58.04476808281233
2002	58.65050602244273
2003	59.20749967161542
2004	59.69532112930405
2005	60.244182228101
2006	60.79220347024886
2007	61.09449606698786
2008	61.2819478671529
2009	61.80188507561104
2010	62.295742844536015
2011	62.86591565156514
2012	63.429261641082675
2013	64.00127662231674
2014	64.77076983496195
2015	65.45057042409196
2016	66.0830260682951
2017	66.5616548320047
2018	66.94488100144115
2019	67.19951978657176
2020	65.88251992326846
2021	61.77990982956176
2022	63.35808645296164