Year	% of cohort
1960	70.308064
1961	70.190536
1962	69.875649
1963	69.757112
1964	71.001531
1965	72.15367
1966	72.016067
1967	72.439203
1968	72.536373
1969	72.336648
1970	72.971297
1971	73.236253
1972	74.043436
1973	74.659862
1974	75.390177
1975	75.623227
1976	75.738189
1977	76.344741
1978	76.20489
1979	76.74996
1980	76.723555
1981	76.888372
1982	77.427485
1983	77.417543
1984	78.3379
1985	78.833586
1986	79.220099
1987	79.475502
1988	79.558523
1989	80.002062
1990	80.008977
1991	80.028904
1992	80.489688
1993	81.534865
1994	81.912469
1995	81.88538
1996	83.211839
1997	83.478362
1998	83.461055
1999	84.307399
2000	84.434824
2001	85.131771
2002	85.466808
2003	85.811821
2004	86.282629
2005	86.610226
2006	87.254425
2007	87.32927
2008	87.789024
2009	87.887585
2010	88.502838
2011	88.860354
2012	88.86915
2013	88.991141
2014	89.536589
2015	89.380054
2016	90.257253
2017	90.018552
2018	90.383733
2019	90.810427
2020	90.379346
2021	91.053141
2022	91.311092