Year	% of cohort
1960	56.10473403747492
1961	56.86679965022134
1962	57.425173843243996
1963	57.96514910109852
1964	58.721454719830845
1965	59.35683706495229
1966	59.93319377992824
1967	60.491269228211074
1968	61.04016057415101
1969	61.550997580728264
1970	61.51542637201614
1971	62.906952013233834
1972	63.49154413157822
1973	64.40039108367127
1974	65.02539700554777
1975	65.91423445339768
1976	66.28541561630621
1977	67.29798481410639
1978	67.9162292543975
1979	68.512596107847
1980	69.12084991157771
1981	69.93153214081781
1982	70.44520764573242
1983	71.18199780415266
1984	71.76921661569544
1985	72.078072870216
1986	73.0502547536964
1987	73.7059122305858
1988	74.29581470402076
1989	74.86785590603365
1990	75.41329891948845
1991	75.90493842963657
1992	76.37562915880002
1993	76.8414114857326
1994	77.30361115388779
1995	77.79862994537896
1996	78.33924464662947
1997	78.86004333529104
1998	79.18800241765005
1999	79.80405135931107
2000	80.43312413591964
2001	80.83070740610981
2002	81.27356093230561
2003	81.43100761354671
2004	81.89291909777886
2005	82.35658963150833
2006	82.63768925090586
2007	82.85092318068202
2008	83.13920484205386
2009	83.40786015484761
2010	83.22872008174792
2011	83.96396751482428
2012	84.3351194837954
2013	84.62690788392196
2014	84.89947801060916
2015	85.04947480014921
2016	85.13905762407742
2017	85.21931156255978
2018	85.40111479182384
2019	85.65595824390932
2020	82.51914651319326
2021	80.72229363508227
2022	83.05328947962202