Year	% of cohort
1960	45.23373343090511
1961	45.603751364761415
1962	45.759845334316125
1963	46.2478671316617
1964	46.93951943718117
1965	47.05317267346454
1966	46.85816247078162
1967	47.36716374135552
1968	47.95757680895218
1969	47.99727892204799
1970	48.35242428126286
1971	49.08107432109049
1972	49.00023275603814
1973	49.79376499869695
1974	49.958966761561285
1975	50.42729728462834
1976	51.00578235476951
1977	51.80322734806162
1978	52.03345447905014
1979	52.27451065035486
1980	52.654287497719075
1981	52.89024086865852
1982	52.99340242114582
1983	52.15432736700176
1984	52.0564143159966
1985	52.10038616022567
1986	52.9703702748039
1987	53.473159665157596
1988	52.95591549532836
1989	54.075165991702434
1990	54.05024231975533
1991	53.912927267548476
1992	53.75718297609386
1993	54.173004512552225
1994	54.73660994341799
1995	54.340735848395695
1996	54.375501646354685
1997	54.71343365057973
1998	54.499273651345554
1999	55.37328883061275
2000	55.91069593214803
2001	56.093551641983254
2002	56.60158930293996
2003	56.97058556018958
2004	57.268108709150496
2005	57.83472763180317
2006	58.5193293191413
2007	59.21967274438485
2008	58.682153348376445
2009	60.69482711761035
2010	60.80375956926886
2011	62.022124715876835
2012	62.37526308496631
2013	62.95668952229778
2014	63.48301779585345
2015	64.05060245626366
2016	64.6352300982779
2017	65.21602457648709
2018	65.76227145283961
2019	66.15009896812889
2020	64.90977540806627
2021	63.86862562730022
2022	64.71783904931343