Year	% of cohort
1960	67.546753
1961	68.050631
1962	66.969257
1963	66.940648
1964	68.49365
1965	68.404208
1966	69.667178
1967	69.819565
1968	69.543058
1969	68.870873
1970	70.576879
1971	70.860697
1972	71.05374
1973	71.316107
1974	72.026291
1975	71.675808
1976	72.132925
1977	72.554681
1978	72.908974
1979	73.351656
1980	73.340041
1981	74.107593
1982	74.908257
1983	74.613978
1984	75.789818
1985	76.185713
1986	76.767516
1987	77.311894
1988	77.852514
1989	78.43253
1990	78.791717
1991	78.737496
1992	79.415976
1993	80.263812
1994	80.573248
1995	81.020003
1996	81.73346
1997	82.332935
1998	82.729858
1999	83.295983
2000	83.970666
2001	84.321616
2002	84.834979
2003	85.31027
2004	86.069534
2005	86.388529
2006	86.689687
2007	87.05535
2008	87.350989
2009	87.592433
2010	88.130972
2011	88.326808
2012	88.516881
2013	88.912591
2014	89.127952
2015	88.937436
2016	89.444926
2017	89.127967
2018	89.615946
2019	89.950748
2020	89.020832
2021	89.071502
2022	90.780529