Year	% of cohort
1960	34.80590926720493
1961	35.608577650259114
1962	35.68872702230574
1963	37.624886643047525
1964	38.5280004894776
1965	39.25548520033094
1966	39.661344082492356
1967	40.02736473033535
1968	40.485687039984846
1969	41.09882427504013
1970	41.73251777479198
1971	42.63241247938503
1972	43.3336411439504
1973	43.578533346070024
1974	44.772990455577855
1975	45.24848140283658
1976	45.99719295503082
1977	47.85253247796002
1978	48.45300067459485
1979	50.166336407790766
1980	49.64928588597084
1981	47.708508636634335
1982	48.01470458541937
1983	50.6326347714643
1984	53.52687924191028
1985	54.69523261470529
1986	55.330796074153774
1987	56.82719634945795
1988	57.419334504977165
1989	60.081246390603305
1990	59.886588919322186
1991	62.27509390232114
1992	63.342568367892405
1993	63.92712394789444
1994	63.880458583312425
1995	64.40626296436508
1996	65.2229294901304
1997	65.68741344917112
1998	66.18550644685182
1999	66.92031725693211
2000	67.44617426210884
2001	68.07850076412893
2002	68.7375131068502
2003	68.13555029672865
2004	68.95213212839249
2005	69.44030673871039
2006	69.41527430855189
2007	69.98962306439599
2008	70.57114869944813
2009	71.31147062149938
2010	71.45938512470862
2011	71.796687568037
2012	71.45933683083379
2013	71.36155806702365
2014	72.16205138629674
2015	72.66625742633914
2016	72.88738264996064
2017	73.71689593314632
2018	74.32939083795557
2019	74.64053682473292
2020	72.19139213110036
2021	72.03294943098807
2022	72.70827163947142