Year	% of cohort
1960	34.899258789168364
1961	35.514716577562325
1962	36.114507118118226
1963	36.164151546274475
1964	37.24234682032893
1965	37.04285259938316
1966	37.55664213703216
1967	38.42917892262674
1968	38.93514732621477
1969	39.255621407666666
1970	37.09967568660226
1971	35.07116472112421
1972	40.03727993968333
1973	40.83059946124843
1974	40.70826748846819
1975	40.5174259114218
1976	41.266453054290494
1977	42.32196860730276
1978	42.92105229545925
1979	43.607706313633365
1980	44.25456510930102
1981	44.67182878563092
1982	45.11465076287514
1983	44.069890052978
1984	44.36630245556376
1985	44.80504195516483
1986	45.57008298098989
1987	46.30103756415452
1988	45.92978454632157
1989	46.720503562208016
1990	46.95938022171759
1991	46.41324350712069
1992	47.615795404150695
1993	48.220611167687274
1994	49.224171419252
1995	49.79958104448223
1996	49.69654791169719
1997	51.19890977527873
1998	52.201139941194384
1999	53.902174131996915
2000	54.440099362590864
2001	55.14372068543699
2002	55.90608328880536
2003	56.82888734500363
2004	57.432188903182606
2005	58.36249014346286
2006	59.24838613377577
2007	59.92443669223558
2008	59.828638272851066
2009	61.842683880184644
2010	62.69042805349926
2011	64.08893020701395
2012	65.32800494266125
2013	66.48101559629025
2014	67.11171831923286
2015	67.79729703160358
2016	68.78510499860428
2017	69.39781824163528
2018	70.15151058109105
2019	70.84967101611048
2020	69.357371618848
2021	68.3468454744508
2022	70.12723803178378