Annual % of cohort
1960 41.74988650247658
1961 44.74280963829757
1962 48.99909165754198
1963 49.6298016575415
1964 50.45681399716646
1965 50.34459010968056
1966 51.165743389492135
1967 51.90421440346088
1968 52.82687016054094
1969 53.39528164860402
1970 53.8167376677945
1971 54.31347237354889
1972 55.55004981706461
1973 56.54203333127939
1974 57.34021756265186
1975 58.166017538661286
1976 58.985818629302585
1977 59.951969034631794
1978 60.76766236117883
1979 61.60133888152377
1980 62.367541403171984
1981 63.16224233547384
1982 63.874026887741024
1983 64.46947829100297
1984 65.03700627390526
1985 65.575466466047
1986 66.34855645534174
1987 66.87206122697218
1988 67.2730193267877
1989 67.82023055542781
1990 68.10977346635461
1991 68.2288250382628
1992 68.76157519002298
1993 69.11746307319156
1994 69.3812227925399
1995 69.81079296657899
1996 70.08884784703416
1997 70.64738591294814
1998 71.19735803256928
1999 71.60533010350385
2000 72.1373584971379
2001 72.84467023102204
2002 73.30462217697927
2003 73.76275299298001
2004 74.06534873317007
2005 74.78152908109743
2006 75.41828576037427
2007 75.86958527292045
2008 76.07177464598722
2009 76.75815132548962
2010 77.15599592363151
2011 77.66854947622741
2012 78.0734025695753
2013 78.46510488187849
2014 78.78794880113898
2015 79.05174638621658
2016 79.36863335325232
2017 79.70048396212701
2018 80.00885467337498
2019 80.2823194864272
2020 79.01589632485545
2021 77.05713312079995
2022 78.07666059327559