Year	% of cohort
1960	37.00427384505084
1961	37.64048670215224
1962	38.241866514328734
1963	38.36366446220994
1964	39.39977466844639
1965	39.30348085268198
1966	39.84251889179455
1967	40.72185576986121
1968	41.223460230520026
1969	41.58520921939202
1970	39.79293182992801
1971	38.083743124566695
1972	42.449894394489036
1973	43.28149441665066
1974	43.220924202580676
1975	43.22225054048606
1976	43.98284476446183
1977	44.958439491490914
1978	45.679362401311906
1979	46.41551763463018
1980	47.08406818884839
1981	47.49761630365136
1982	47.87696828919196
1983	47.182450228563724
1984	47.52906112847313
1985	47.956683967430635
1986	48.72842665754166
1987	49.48674206764805
1988	49.23715096181161
1989	49.92334593262259
1990	50.223859372834966
1991	49.73354822718679
1992	50.815010737733765
1993	51.28909143102353
1994	52.127818476277504
1995	52.65729123376311
1996	52.56605716597134
1997	53.89340111859004
1998	54.65357461032941
1999	56.27214209721125
2000	56.63184363628012
2001	57.271343922274184
2002	57.99539804245988
2003	58.81835252932679
2004	59.035689296094326
2005	60.201526196506784
2006	61.05489991317795
2007	61.71816244560965
2008	61.65970490820873
2009	63.37899940378655
2010	64.23370092133564
2011	65.50789381066576
2012	66.44354821818244
2013	67.39566150497765
2014	67.93978786837222
2015	68.58682101422654
2016	69.53364225641329
2017	70.18246407830732
2018	70.85179577708531
2019	71.57743903819144
2020	70.08891559297591
2021	69.19128440152927
2022	70.86169239207997