Year	% of cohort
1960	38.405346349060835
1961	38.97076088213056
1962	39.54294089446466
1963	40.192603074285365
1964	40.7702204038349
1965	38.73532761907275
1966	40.383702694398046
1967	41.262343238890544
1968	42.66527998049755
1969	43.15252179357548
1970	43.07854778458686
1971	41.410077920563346
1972	44.76420459473859
1973	45.37003110871269
1974	46.05888530443124
1975	46.71210380170916
1976	47.28761431393886
1977	47.81748059436374
1978	48.24254630370534
1979	48.861925277664675
1980	49.490865489221044
1981	49.88650480243257
1982	50.53452326001638
1983	51.2585491210717
1984	52.218016552837746
1985	53.065507888110005
1986	53.73874218900651
1987	54.55020495258623
1988	55.00922378044165
1989	55.69560512227883
1990	56.15937400367279
1991	56.59658247645466
1992	57.26632535231893
1993	57.62378939674919
1994	58.063450395983395
1995	58.57069688029485
1996	59.01015930733787
1997	59.47447867484183
1998	60.11063842674181
1999	60.65045711972264
2000	61.14345476617461
2001	61.53357381990912
2002	62.18408426757071
2003	62.540788231290314
2004	62.91036674037443
2005	63.561984318565884
2006	64.04394439986251
2007	64.39358907620644
2008	64.58872389217068
2009	65.08311126869384
2010	65.52006703687033
2011	66.0529940226699
2012	66.5324357264633
2013	67.0229585155599
2014	67.79359803585756
2015	68.40117894350435
2016	68.89916937404695
2017	69.38496889063562
2018	69.76853852880993
2019	70.07298703443615
2020	67.76244552785616
2021	64.11008161852703
2022	66.12377229025066