Annual % of cohort
1960 46.75299822600246
1961 47.492525694316136
1962 48.10796754802332
1963 48.73799767412577
1964 49.30460228662787
1965 49.72060375360887
1966 50.377107800000594
1967 50.80693491394837
1968 51.194719455931065
1969 51.63986242306922
1970 51.62165948925528
1971 52.84974247153145
1972 53.38998907618578
1973 54.07323188474254
1974 54.59049275621046
1975 55.22163370996972
1976 55.44376254596522
1977 56.08362533444769
1978 56.471919651542976
1979 56.87791641866605
1980 57.48047215811916
1981 58.05339339752975
1982 58.47155592028186
1983 59.41058855178496
1984 59.9852812809498
1985 60.52123135510493
1986 61.40474501615319
1987 61.98341876882494
1988 62.63719893095728
1989 63.07222260152959
1990 63.2086574497864
1991 63.6607956478391
1992 64.10528507872579
1993 64.59754795234358
1994 65.2822376344114
1995 65.66751049811259
1996 66.30340341194815
1997 66.80267809562143
1998 67.30781805641126
1999 67.95430525709968
2000 68.18369974743138
2001 68.70035066344849
2002 69.0981622075443
2003 69.58511259673536
2004 70.02748186001293
2005 70.71647633097525
2006 71.03378896141336
2007 71.26990169369557
2008 71.73577195648886
2009 72.09126791224719
2010 71.89898754875829
2011 72.70781417761175
2012 73.08805059310724
2013 73.6166749330009
2014 74.10536142896342
2015 74.04928152323586
2016 73.89300971396617
2017 74.25120083544853
2018 74.42807811259773
2019 74.72796439224916
2020 69.38769412047009
2021 67.07204014354284
2022 71.48970094299919