Year	% of cohort
1960	31.79678812178286
1961	34.8029925581882
1962	39.31818776646527
1963	40.03267836706998
1964	40.86473817746443
1965	40.28279978096633
1966	41.682149472917736
1967	42.50724266862319
1968	43.63547977293733
1969	44.4218187878419
1970	45.053073470933704
1971	45.00559611575673
1972	47.18698779815259
1973	48.30371616870541
1974	49.04708092221941
1975	50.049323958918116
1976	50.94051992689737
1977	51.72084918516502
1978	52.38218644128423
1979	53.12948342687351
1980	53.78309176509554
1981	54.400372885184055
1982	55.101794968155346
1983	55.86406369846764
1984	56.65853223344355
1985	57.354055820672805
1986	58.062449958224235
1987	58.594535106095215
1988	58.9975368618655
1989	59.57324010157859
1990	59.90395538331719
1991	60.336900219621434
1992	60.89469716591019
1993	61.280127900143604
1994	61.74624433119393
1995	62.148236158432354
1996	62.5661634446028
1997	63.06635360874936
1998	63.61475349450828
1999	64.15107538042949
2000	64.52298698089398
2001	64.98625424721601
2002	65.51492623631039
2003	65.91520297503138
2004	66.27372108758262
2005	66.88628814089829
2006	67.38147199691366
2007	67.67441122195365
2008	67.87135951859366
2009	68.41118154120825
2010	68.80471681494609
2011	69.25691207003254
2012	69.70718084032556
2013	70.15231295010634
2014	70.74648664529184
2015	71.18918020446985
2016	71.55363710915125
2017	71.79546325486022
2018	72.30870700391337
2019	72.56495119794924
2020	70.89358730397628
2021	68.47389881928194
2022	69.96279261771708