Year	% of cohort
1960	47.399506658205766
1961	48.147464757057136
1962	48.65062662419258
1963	49.14783819968034
1964	49.86184113687975
1965	50.33221007633197
1966	50.982015442719685
1967	51.44223216563135
1968	51.86914943937001
1969	52.32718783570254
1970	52.44463148680231
1971	53.56427298403117
1972	53.99504956497187
1973	54.80109739278637
1974	55.443814767339084
1975	56.11441845399988
1976	56.34288415819256
1977	56.99614606263529
1978	57.38505805382395
1979	57.82163109404889
1980	58.435646856959536
1981	59.08628723472032
1982	59.49119314999037
1983	60.33613114183716
1984	60.896880178329084
1985	61.471338443028216
1986	62.38363645082446
1987	62.982082306317615
1988	63.55077852925967
1989	63.855201533258246
1990	64.02800666355516
1991	64.51963651119489
1992	64.97363516059846
1993	65.41004505696118
1994	66.01270366517781
1995	66.38041060310807
1996	66.96760115020254
1997	67.50626526336217
1998	67.95816256074752
1999	68.53331575381765
2000	68.75191252992326
2001	69.06580757149221
2002	69.61137673538823
2003	69.96261042713161
2004	70.43707793101545
2005	71.08991078518669
2006	71.36628317216541
2007	71.57071308490943
2008	71.91200696364415
2009	72.25773584745457
2010	72.11785252365885
2011	72.87252657275779
2012	73.22926830879425
2013	73.72962177819232
2014	74.14750416661454
2015	74.12511999068623
2016	73.889406010996
2017	74.25034136503751
2018	74.38752810836732
2019	74.69416850624444
2020	69.81787080463705
2021	67.59495363826879
2022	71.69746149461284