Annual % of cohort
1960 34.80590926720493
1961 35.608577650259114
1962 35.68872702230574
1963 37.624886643047525
1964 38.5280004894776
1965 39.25548520033094
1966 39.661344082492356
1967 40.02736473033535
1968 40.485687039984846
1969 41.09882427504013
1970 41.73251777479198
1971 42.63241247938503
1972 43.3336411439504
1973 43.578533346070024
1974 44.772990455577855
1975 45.24848140283658
1976 45.99719295503082
1977 47.85253247796002
1978 48.45300067459485
1979 50.166336407790766
1980 49.64928588597084
1981 47.708508636634335
1982 48.01470458541937
1983 50.6326347714643
1984 53.52687924191028
1985 54.69523261470529
1986 55.330796074153774
1987 56.82719634945795
1988 57.419334504977165
1989 60.081246390603305
1990 59.886588919322186
1991 62.27509390232114
1992 63.342568367892405
1993 63.92712394789444
1994 63.880458583312425
1995 64.40626296436508
1996 65.2229294901304
1997 65.68741344917112
1998 66.18550644685182
1999 66.92031725693211
2000 67.44617426210884
2001 68.07850076412893
2002 68.7375131068502
2003 68.13555029672865
2004 68.95213212839249
2005 69.44030673871039
2006 69.41527430855189
2007 69.98962306439599
2008 70.57114869944813
2009 71.31147062149938
2010 71.45938512470862
2011 71.796687568037
2012 71.45933683083379
2013 71.36155806702365
2014 72.16205138629674
2015 72.66625742633914
2016 72.88738264996064
2017 73.71689593314632
2018 74.32939083795557
2019 74.64053682473292
2020 72.19139213110036
2021 72.03294943098807
2022 72.70827163947142