Year	% of cohort
1960	31.134920595741576
1961	31.53413623718217
1962	31.806418569560883
1963	32.221535741637624
1964	32.64785741918074
1965	32.94147416333586
1966	33.13197716988309
1967	33.01664075780359
1968	33.85505749148796
1969	34.10426781717482
1970	34.68029252605286
1971	35.248947747556485
1972	36.18754472610466
1973	36.89512084386194
1974	37.7809660692311
1975	38.82996699209818
1976	40.12898191069269
1977	41.27921799380733
1978	42.14649845844592
1979	42.63280933575351
1980	43.09642313359551
1981	43.32732657006086
1982	43.62845874127152
1983	43.97119169298326
1984	44.108376991980855
1985	44.24974600487246
1986	44.157639563782965
1987	44.63450058356153
1988	44.95362638693006
1989	45.20349542567851
1990	45.23131498932144
1991	45.017680183107835
1992	45.07350653987925
1993	45.1088434751028
1994	44.58782017113406
1995	44.63667751632
1996	44.67493796764006
1997	44.754446659425476
1998	44.635043650613326
1999	45.14682269496781
2000	45.57636341816768
2001	45.83424403966271
2002	46.19840803017262
2003	46.84796642062108
2004	47.233095470518464
2005	47.89603915701655
2006	48.44980198149393
2007	49.01310102855874
2008	49.34838553005748
2009	50.18449984723482
2010	50.6916519149333
2011	51.450504591251196
2012	51.94154983427587
2013	52.487580615618015
2014	52.86765208747535
2015	53.28912503537488
2016	53.69685746118923
2017	54.314462143623004
2018	54.67455335784653
2019	55.359270463618024
2020	54.54741751757416
2021	53.66941368913533
2022	55.0103649203026