Year	% of cohort
1960	33.03553491781529
1961	33.650251278999924
1962	34.5798234319169
1963	34.88389245565552
1964	35.693761332460575
1965	35.91848078038774
1966	36.65199878936808
1967	36.98860543674632
1968	37.77234011962202
1969	38.254374089589675
1970	37.81933079303158
1971	32.258504831436376
1972	39.614195928568364
1973	40.33704860189133
1974	40.50628139987013
1975	41.08016760689115
1976	41.783802795201225
1977	42.22790205831254
1978	42.49880964126037
1979	42.9468092183311
1980	43.722314339102226
1981	44.20798084743102
1982	44.332607597317526
1983	44.118107109927216
1984	44.044973090326685
1985	44.376778329385004
1986	44.87479247728813
1987	45.11872091020675
1988	44.95066482142326
1989	45.734329337609886
1990	46.00017752678253
1991	45.660485146259475
1992	46.0051803820644
1993	46.257515075092876
1994	46.88267550800536
1995	46.835748688935375
1996	46.952438489787326
1997	47.40858650012988
1998	47.708863104626396
1999	49.20972600760137
2000	49.941177080661625
2001	50.382696839450354
2002	50.81884325081459
2003	51.3220314203001
2004	51.696311533222435
2005	52.169070380816
2006	53.063098768900254
2007	53.39386932300245
2008	53.579773773806856
2009	54.49468722423121
2010	55.263953447549
2011	56.05121293022326
2012	56.324435753707384
2013	56.61168206770798
2014	57.18312150167962
2015	57.70060113207468
2016	58.37989026689104
2017	58.91538892872904
2018	59.483394165280174
2019	59.97596818824329
2020	58.57139786351425
2021	57.2962113179408
2022	58.75260809297245