Year	% of cohort
1960	35.33453948838168
1961	35.84697992439016
1962	36.2353787493921
1963	36.639285847239066
1964	37.32442812559069
1965	37.49080182696195
1966	37.32320981978417
1967	37.86870598920891
1968	38.50380250946253
1969	38.848078712518486
1970	39.350632255371224
1971	40.097892418498986
1972	40.232534781374156
1973	41.13974800500544
1974	41.460756551937685
1975	41.975182553132335
1976	43.10416162783068
1977	43.915068751351086
1978	44.49654709155695
1979	45.08251581721604
1980	45.59856778762556
1981	46.20891443262089
1982	46.523759557565825
1983	45.35363653593908
1984	45.44201868199455
1985	45.706485860067666
1986	46.176847616732715
1987	46.663903868065525
1988	46.255650217854516
1989	47.063558641533604
1990	46.952327098083195
1991	46.53895631381189
1992	46.075283759372454
1993	46.19243371376836
1994	46.301467730934576
1995	46.13391990175553
1996	45.7108956697751
1997	45.610231139744435
1998	44.99903078313954
1999	45.67434811669588
2000	45.919875398248976
2001	45.89322734268992
2002	46.17157839677773
2003	46.62453979069101
2004	47.12459940478093
2005	47.99318288179503
2006	49.12313819951568
2007	50.166019171207694
2008	51.13165600244177
2009	52.56189383343262
2010	53.71229259819946
2011	55.082384272840756
2012	56.207314793825546
2013	57.28741345113718
2014	58.225495636417875
2015	58.9988800893922
2016	59.89142069872569
2017	60.61642866132435
2018	61.34405306818645
2019	62.060995559028974
2020	61.158542718902076
2021	59.76081397861456
2022	60.72700886329873