Year	% of cohort
1960	34.52511796445734
1961	35.3308950976242
1962	35.72083943774517
1963	37.033297642963355
1964	38.39217672639078
1965	38.690245119751516
1966	38.690251292446185
1967	39.025335346817805
1968	39.76768550755108
1969	40.01507782769073
1970	40.67740991302596
1971	42.066430175497786
1972	42.8741686732162
1973	43.561235903035076
1974	44.633440149981276
1975	45.0214502843717
1976	45.68778420091149
1977	47.699661632513326
1978	48.822522068640154
1979	49.86412258588772
1980	50.048379380058726
1981	50.24337033107641
1982	50.4697683398816
1983	51.74335211736409
1984	52.84364160917161
1985	53.98283896174373
1986	55.174478359249285
1987	55.27298776831034
1988	54.4657869579677
1989	57.750089646215194
1990	58.40280708853281
1991	59.584292058038
1992	60.26184460177483
1993	61.59728524420783
1994	63.28305198791414
1995	62.826773812519754
1996	63.53001134852896
1997	63.902249288134826
1998	63.56908996654559
1999	65.4903307165491
2000	66.03918888225311
2001	66.65418897732386
2002	67.1212338195115
2003	66.75174504798045
2004	66.66193767786531
2005	67.05856596445551
2006	67.69286503598519
2007	68.37185946429221
2008	69.21728465102899
2009	70.26596454893516
2010	70.71741892456015
2011	71.06935277345734
2012	70.75027857372757
2013	70.6909958765153
2014	71.29195437721219
2015	71.92177254146499
2016	72.01423236249154
2017	72.8559233520136
2018	73.33976075489147
2019	73.86083836564697
2020	71.87385561342147
2021	71.54404214696345
2022	72.15734251373131