Year	% of cohort
1960	30.941154663550307
1961	31.36364866727992
1962	32.08613379629296
1963	32.15967620080379
1964	33.04122881531447
1965	32.92014996584795
1966	33.493369086058976
1967	34.17851474916604
1968	34.65422943587482
1969	34.91867281754884
1970	33.157947382593385
1971	25.9926545675556
1972	35.31485604494681
1973	36.19286584086415
1974	36.12553435955168
1975	36.52426158689991
1976	37.35288457040323
1977	37.94621141003372
1978	38.070667161444355
1979	38.64793805762386
1980	39.26627754933555
1981	39.70941889477935
1982	39.90791361359072
1983	38.87086978170832
1984	38.58736997769786
1985	39.0013821518972
1986	39.70933237100824
1987	40.28873550155597
1988	40.03176984893774
1989	41.4814105996441
1990	41.81546067823223
1991	41.47226720424362
1992	42.25302876622122
1993	42.88706082816779
1994	44.17301832509402
1995	44.65142200886158
1996	44.844574835655685
1997	45.73844042144468
1998	46.01563212698194
1999	48.0472018209179
2000	49.01251314428302
2001	49.492542324996826
2002	49.89923184572096
2003	50.55889791127583
2004	51.197321259107426
2005	51.76332065933192
2006	52.594461897705735
2007	53.02582803347828
2008	53.17976913122235
2009	54.57066282739322
2010	55.26102925884786
2011	56.313115087192635
2012	57.02865823929571
2013	57.382824993473506
2014	58.183985390652204
2015	58.72565662462359
2016	59.52721516270247
2017	60.204970884817385
2018	60.8255056636419
2019	61.224659049324316
2020	59.91124370356906
2021	58.20606296916141
2022	59.793434153745025