Annual % of cohort
1960 36.94992159988853
1961 37.31834689395377
1962 37.802113690653385
1963 38.20298400095375
1964 38.764509818783914
1965 37.58159624505989
1966 38.43195792747893
1967 39.020705033719814
1968 41.035784064758204
1969 41.59276439505067
1970 41.13148397056437
1971 40.10927308936623
1972 43.153552380244115
1973 43.82222825697098
1974 44.53935211011577
1975 45.51631465720989
1976 46.3859449322252
1977 47.366633619245725
1978 48.36305598562695
1979 49.4161395968749
1980 50.505339723975624
1981 51.59585366839885
1982 52.58973288545847
1983 53.59722420558917
1984 54.506562858696384
1985 55.203490826906524
1986 55.940524888445815
1987 56.60650204582101
1988 57.369469854891314
1989 57.89539320565831
1990 58.68578365738997
1991 58.9141871366562
1992 59.81646461424245
1993 60.097015300083285
1994 60.66752262651808
1995 61.13383997516216
1996 61.580125837058354
1997 62.640753436443454
1998 63.733131778502795
1999 64.80638036248244
2000 65.48175316423134
2001 66.27781531027576
2002 67.18306755260924
2003 68.06110874896227
2004 68.72716212343651
2005 69.5744373228153
2006 70.55956472679428
2007 71.17213795598067
2008 71.90547266259027
2009 72.38641587412013
2010 73.19493259684948
2011 73.65853765662128
2012 74.18960360499426
2013 74.62069483965642
2014 74.83467853375936
2015 75.12425416092306
2016 75.49652103318259
2017 75.9855118833346
2018 76.42454425713183
2019 76.91356326998083
2020 75.76567376192898
2021 71.4485248475056
2022 72.9367093172103