Year	% of cohort
1960	36.078351203079265
1961	36.78689173127794
1962	37.42361677497451
1963	38.521503118513465
1964	39.464369585936595
1965	40.402114232208575
1966	41.46285033116214
1967	42.07732142338056
1968	43.51760716367091
1969	44.43961589601043
1970	45.71751283670495
1971	44.82618820951234
1972	47.2491801163724
1973	47.88478510578021
1974	48.322774177084156
1975	49.146727759495285
1976	50.17716775060627
1977	51.059930502025615
1978	51.84200175199752
1979	52.496473247583374
1980	53.256190598998884
1981	54.365156723903034
1982	54.80572263651572
1983	55.47581425722465
1984	55.85272490520943
1985	55.285286175605755
1986	54.8367903830348
1987	54.57096094706095
1988	55.005947431247606
1989	55.195845821758574
1990	55.49815305517499
1991	54.90861566111689
1992	54.04895582610103
1993	53.319813249022346
1994	52.8541953185333
1995	52.20471121687244
1996	52.403167318643945
1997	52.45804893702075
1998	52.57572142267495
1999	53.19431578667685
2000	53.55463398985671
2001	53.80305547830874
2002	54.21525902571637
2003	54.709295515969245
2004	55.36451398148375
2005	55.418591885555166
2006	57.11243805947369
2007	57.712182964132325
2008	58.30343549147316
2009	58.83930559148081
2010	59.444326502659806
2011	60.15333110683615
2012	60.38965637691798
2013	60.96385475387385
2014	61.27911302950971
2015	61.69940300391158
2016	61.812305649347635
2017	62.56023048713824
2018	62.76249074614715
2019	63.005921928657855
2020	62.44191734804508
2021	61.51344649062842
2022	62.74876017179375