Year	% of cohort
1960	32.142304
1961	32.218499
1962	32.587479
1963	32.84586
1964	33.228582
1965	33.765418
1966	34.00323
1967	34.449058
1968	35.060406
1969	35.457565
1970	35.946
1971	36.282797
1972	36.604627
1973	37.174003
1974	37.671715
1975	37.108152
1976	37.072431
1977	37.360038
1978	37.870771
1979	38.338918
1980	38.642728
1981	38.946582
1982	39.294981
1983	38.003267
1984	38.421602
1985	38.687375
1986	38.805982
1987	36.756475
1988	37.415064
1989	37.669319
1990	37.860393
1991	40.069294
1992	37.978609
1993	39.489032
1994	40.954632
1995	41.676635
1996	41.785755
1997	42.231756
1998	41.054907
1999	42.162077
2000	42.199881
2001	43.697438
2002	43.958905
2003	46.592696
2004	47.957454
2005	49.252335
2006	50.397687
2007	52.275717
2008	53.362107
2009	55.220367
2010	56.778003
2011	57.870249
2012	59.682945
2013	60.534332
2014	61.723907
2015	62.671834
2016	63.00739
2017	63.949981
2018	65.186505
2019	65.323119
2020	65.265071
2021	63.523185
2022	64.128014