Annual % 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