Year	% of cohort
1960	46.542033859586596
1961	47.321642449588744
1962	47.82083929961609
1963	48.34964706101016
1964	49.060092960445715
1965	49.53754255514353
1966	50.20359167650199
1967	50.66938209887131
1968	51.10132402154191
1969	51.56537102188512
1970	51.673701820624295
1971	52.828183371661375
1972	53.264329439075695
1973	54.0892873504829
1974	54.74671829917837
1975	55.43060645306753
1976	55.655510411077636
1977	56.32798941363686
1978	56.73220996389738
1979	57.18435641531643
1980	57.81968462823568
1981	58.49294913262254
1982	58.907492706866826
1983	59.78697231742402
1984	60.37153769903317
1985	60.98033236772458
1986	61.927676074082534
1987	62.55812503037785
1988	63.15607234758967
1989	63.47824353273784
1990	63.66039367475727
1991	64.17405187274115
1992	64.64234242397904
1993	65.09805704354086
1994	65.71944886617473
1995	66.09317268178985
1996	66.69498381597883
1997	67.2437271728839
1998	67.70212293180315
1999	68.28675034427701
2000	68.50048855453085
2001	68.81244702189312
2002	69.36606033045219
2003	69.72094125340257
2004	70.20311231736308
2005	70.87201133914532
2006	71.15317591309456
2007	71.36273589996203
2008	71.7134154259457
2009	72.07135813651288
2010	71.92758483842329
2011	72.7034336512132
2012	73.07097110886356
2013	73.58505531865265
2014	74.01641795424104
2015	73.99284620970181
2016	73.75337822344476
2017	74.13536131400072
2018	74.28048139656522
2019	74.6018744791845
2020	69.61499194624479
2021	67.44346676586987
2022	71.51251468716563