Year	% of cohort
1960	29.67300927710254
1961	29.918421355289627
1962	30.72463176186682
1963	30.81390678389159
1964	31.312986630857324
1965	31.44398827860352
1966	31.42556741738769
1967	31.341544680611022
1968	32.00608817504197
1969	32.315051728701555
1970	33.180365789563645
1971	33.80468840302197
1972	33.978906894245284
1973	35.143702364414274
1974	35.42723751549917
1975	35.948115770163874
1976	36.6969394316502
1977	37.22985958367233
1978	37.43671763007664
1979	38.120373728474306
1980	38.618896044179934
1981	39.1064123400583
1982	39.30304705444927
1983	38.09384063398248
1984	37.8106267880983
1985	38.005742416996064
1986	38.389694004967275
1987	38.44399263229295
1988	37.94944256372351
1989	39.02481874097253
1990	38.597902247189985
1991	38.445855987958915
1992	37.91352057832974
1993	37.97626693467041
1994	38.7640806887602
1995	38.50570446362201
1996	38.16643763257179
1997	38.332520822140914
1998	37.586264213486984
1999	38.53702213079596
2000	39.84907929393123
2001	40.144804728266564
2002	40.47293934154892
2003	41.08356001890561
2004	41.70544271488542
2005	42.52528691014342
2006	43.662958284775165
2007	44.50312502802849
2008	45.354017746205365
2009	46.401981607064684
2010	47.37392980947502
2011	48.40156013262469
2012	49.29855492071132
2013	50.00879383959247
2014	50.70498197900823
2015	51.34001914553844
2016	52.20380048905546
2017	52.85866842761271
2018	53.431202222311306
2019	54.058819406811644
2020	52.52254657649088
2021	50.767493971906866
2022	51.927465775624526