Year	% of cohort
1960	55.29550543501774
1961	56.05268803344743
1962	56.64400517870532
1963	57.239641097056555
1964	57.92322711652313
1965	58.52167229933472
1966	59.06488779843987
1967	59.60289269547155
1968	60.14679338456773
1969	60.67099517361471
1970	60.48426418428091
1971	61.948714954084316
1972	62.55593429490773
1973	63.39299254058473
1974	64.00266475845659
1975	64.86587745909678
1976	65.27208873522189
1977	66.26076693083482
1978	66.87211117272253
1979	67.48827501926719
1980	68.1115789021667
1981	68.90231419643841
1982	69.39446870777935
1983	70.16564715476338
1984	70.78527295763438
1985	71.09450870997348
1986	72.10775878007111
1987	72.81868795820819
1988	73.44818607032015
1989	74.07049752325457
1990	74.68421302644353
1991	75.14493650034524
1992	75.65109154556669
1993	76.12617451218031
1994	76.62840355519101
1995	77.1551721158382
1996	77.73316679262632
1997	78.24721259157974
1998	78.58411614915995
1999	79.28173999370229
2000	79.90753663466187
2001	80.41311577593657
2002	80.79607039136087
2003	81.01480863077506
2004	81.47260523466385
2005	81.95022286382991
2006	82.27107736513905
2007	82.48966668975501
2008	82.82304233304593
2009	83.1105916600689
2010	82.90556524504348
2011	83.71423255497537
2012	84.09707923899184
2013	84.41786144775213
2014	84.72448250362027
2015	84.87533236439373
2016	84.99792569876932
2017	85.12818245866274
2018	85.30838143143406
2019	85.5733456251777
2020	82.20150241098915
2021	80.31991806901344
2022	82.80602160448882