Year	% of cohort
1960	41.63541160249258
1961	42.55963927600417
1962	42.856368935315984
1963	44.14797223735054
1964	44.968016624872234
1965	45.706917124769674
1966	46.45246058361253
1967	47.08205184509494
1968	47.49629581535276
1969	48.33955969071202
1970	49.101062239571135
1971	49.954017719044
1972	50.64036964775812
1973	51.76346987357039
1974	52.8482876438409
1975	53.862293563880066
1976	54.22511609229718
1977	56.08969835565261
1978	56.73340674924916
1979	58.816976459646526
1980	59.95594847081968
1981	60.72139393359704
1982	61.62194886147768
1983	63.9754048917513
1984	65.28122896735887
1985	66.44181802477547
1986	67.50033329642683
1987	68.16433896760782
1988	68.86904121111985
1989	69.44621274535301
1990	69.38784307188754
1991	71.29357015938997
1992	72.10537588590414
1993	72.5320739077033
1994	73.04330314991002
1995	73.53484754615727
1996	74.199917207392
1997	74.6211988209511
1998	74.94933280106392
1999	75.65222313666199
2000	76.42747662297825
2001	77.02615885446585
2002	77.58976693666291
2003	77.24565890206136
2004	78.25619402326475
2005	79.06136857341903
2006	79.5017527233712
2007	79.88772493715358
2008	79.99877204514623
2009	80.24959601924375
2010	80.76614146124253
2011	81.23480439671108
2012	81.15595249321385
2013	81.25709076156866
2014	81.8740284194188
2015	82.19859337037724
2016	82.88414631470192
2017	83.83656500434253
2018	83.91619159739354
2019	83.94242505158883
2020	82.08091062611786
2021	82.06285168840007
2022	82.64598282677146