Annual % of cohort
1960 41.21103159453573
1961 46.90783579563802
1962 55.325509104881526
1963 56.07524050376757
1964 57.0708048523005
1965 57.900487060034436
1966 58.62825694397229
1967 59.23988510291558
1968 59.821640089717654
1969 60.47042268513165
1970 61.421104565381405
1971 62.413697441797396
1972 63.25141536508831
1973 64.529364899173
1974 65.58914418387873
1975 66.69740903225362
1976 67.6251731436921
1977 68.6262130350656
1978 69.48579386289961
1979 70.25728284319119
1980 70.98779321606796
1981 71.8300831183862
1982 72.55233749786859
1983 73.22886869336011
1984 73.78219146264546
1985 74.30856386131367
1986 75.21296069480523
1987 75.79556276043652
1988 76.22099719036044
1989 76.77611344873087
1990 77.01817330648842
1991 77.0891531714974
1992 77.79854951637873
1993 78.35836021116461
1994 78.54690761092805
1995 79.03243514245673
1996 79.43867973191321
1997 79.98520220202761
1998 80.73318651223184
1999 80.75249906832805
2000 81.40056677189737
2001 82.43837770826246
2002 82.82619878804361
2003 83.40382046081484
2004 83.80336547260627
2005 84.38578222551702
2006 84.87726015602993
2007 85.29153767813916
2008 85.41109400800474
2009 85.96872713645982
2010 86.31091402876612
2011 86.73101288335224
2012 87.10151604027102
2013 87.43718776669202
2014 87.80631228250546
2015 88.06251600892486
2016 88.38338699803855
2017 88.65279896810753
2018 88.92264409323246
2019 89.1356559915502
2020 88.58672483801938
2021 88.03025459560979
2022 88.54856141109428