Year	% of cohort
1960	70.561159
1961	71.674368
1962	72.312516
1963	72.941531
1964	73.671304
1965	74.601152
1966	75.655571
1967	76.020142
1968	76.237085
1969	76.951145
1970	77.715964
1971	78.096167
1972	78.837344
1973	79.156701
1974	79.628312
1975	79.863369
1976	80.335276
1977	80.920682
1978	81.376425
1979	81.844118
1980	81.776798
1981	82.236077
1982	82.448971
1983	81.912878
1984	82.460554
1985	83.19982
1986	83.826772
1987	84.14639
1988	85.230138
1989	86.124931
1990	86.363245
1991	86.146274
1992	86.626028
1993	86.585685
1994	87.050058
1995	87.759353
1996	88.457459
1997	88.512352
1998	88.795354
1999	89.17958
2000	89.737897
2001	90.17074
2002	90.389843
2003	90.188965
2004	90.717131
2005	90.678704
2006	91.37226
2007	91.46625
2008	91.751288
2009	91.743543
2010	92.114206
2011	92.240753
2012	92.343128
2013	92.555296
2014	92.956776
2015	92.993588
2016	93.258358
2017	93.341289
2018	93.674477
2019	93.853374
2020	93.354115
2021	93.290713
2022	94.081827