Annual % of cohort
1960 79.18216607421866
1961 79.80228106103792
1962 79.7932150309712
1963 80.03865804832354
1964 80.83385484494391
1965 81.05202960870895
1966 81.41546693098493
1967 81.66791553826846
1968 81.7473446886132
1969 81.46832838341076
1970 82.23257233864801
1971 82.51428275193472
1972 82.98650230885863
1973 83.26799276845422
1974 83.76538310260737
1975 83.93172430778428
1976 84.33989190784341
1977 84.94061687533467
1978 85.17946280779088
1979 85.55685892808255
1980 85.78021729723818
1981 86.06557979360417
1982 86.41406781938072
1983 86.53575162070736
1984 86.9788299618624
1985 87.2369933361303
1986 87.48802432527776
1987 87.79661745068208
1988 88.03854579072109
1989 88.26895383943352
1990 88.38110264140784
1991 88.4803141124367
1992 88.84640135812819
1993 88.92018420126534
1994 89.21004743387377
1995 89.38406132736384
1996 89.61521543427696
1997 89.90756741492285
1998 90.1119330561329
1999 90.3167418282692
2000 90.50301376269121
2001 90.68563488973632
2002 90.795309476373
2003 90.89377711895698
2004 91.24763665883229
2005 91.34091405194215
2006 91.56649700194953
2007 91.64856609746462
2008 91.71980309672577
2009 91.80928901283811
2010 92.0081915912855
2011 92.06329532300389
2012 92.2089473275319
2013 92.3052182130248
2014 92.51835014992304
2015 92.41421289110451
2016 92.56076405642253
2017 92.58714704774742
2018 92.64791121205006
2019 92.83548154847615
2020 92.73903710979062
2021 92.60599702266408
2022 92.99287459739183