Annual % of cohort
1960 65.71248901265265
1961 66.10561943683264
1962 65.2261237781413
1963 66.66757967510402
1964 67.52774064094338
1965 67.628912144485
1966 68.16314711577483
1967 67.08467452077728
1968 67.10184928858004
1969 65.8192953943287
1970 66.16556411684728
1971 65.81686896956882
1972 67.01626158958172
1973 66.68568696531032
1974 67.28086599757115
1975 66.50306151887808
1976 66.27197390145524
1977 65.70506275415214
1978 65.2950068549165
1979 65.10967731659287
1980 63.86384365116182
1981 64.53023310190753
1982 64.74775087421014
1983 63.76426175216747
1984 63.439764035293464
1985 63.06031215440211
1986 63.55800635401665
1987 63.47425515861184
1988 63.74056607107658
1989 63.230672780229746
1990 62.74075174070233
1991 62.07566666554102
1992 62.240817237723476
1993 62.78097377112397
1994 62.9751642122026
1995 63.04883381933122
1996 63.916530000052305
1997 64.30240230603039
1998 64.93827227305145
1999 65.49526475658804
2000 66.90168905383986
2001 67.49409637197951
2002 67.59691744280907
2003 67.48889504165757
2004 67.62410993717425
2005 68.19413510346045
2006 68.77365750416865
2007 69.26357232903781
2008 70.19716751633962
2009 70.94902359052448
2010 71.7230444740645
2011 72.51194386267561
2012 72.90647821020472
2013 73.82672446787092
2014 74.49094659205636
2015 74.40773549442281
2016 75.06213139257602
2017 75.49870314147593
2018 75.65263754090878
2019 76.32771989975778
2020 75.48830424532736
2021 74.2786750460783
2022 74.93309042704449