Year	% of cohort
1960	46.75299822600246
1961	47.492525694316136
1962	48.10796754802332
1963	48.73799767412577
1964	49.30460228662787
1965	49.72060375360887
1966	50.377107800000594
1967	50.80693491394837
1968	51.194719455931065
1969	51.63986242306922
1970	51.62165948925528
1971	52.84974247153145
1972	53.38998907618578
1973	54.07323188474254
1974	54.59049275621046
1975	55.22163370996972
1976	55.44376254596522
1977	56.08362533444769
1978	56.471919651542976
1979	56.87791641866605
1980	57.48047215811916
1981	58.05339339752975
1982	58.47155592028186
1983	59.41058855178496
1984	59.9852812809498
1985	60.52123135510493
1986	61.40474501615319
1987	61.98341876882494
1988	62.63719893095728
1989	63.07222260152959
1990	63.2086574497864
1991	63.6607956478391
1992	64.10528507872579
1993	64.59754795234358
1994	65.2822376344114
1995	65.66751049811259
1996	66.30340341194815
1997	66.80267809562143
1998	67.30781805641126
1999	67.95430525709968
2000	68.18369974743138
2001	68.70035066344849
2002	69.0981622075443
2003	69.58511259673536
2004	70.02748186001293
2005	70.71647633097525
2006	71.03378896141336
2007	71.26990169369557
2008	71.73577195648886
2009	72.09126791224719
2010	71.89898754875829
2011	72.70781417761175
2012	73.08805059310724
2013	73.6166749330009
2014	74.10536142896342
2015	74.04928152323586
2016	73.89300971396617
2017	74.25120083544853
2018	74.42807811259773
2019	74.72796439224916
2020	69.38769412047009
2021	67.07204014354284
2022	71.48970094299919