Year	% of cohort
1960	53.15489
1961	54.019402
1962	54.821948
1963	55.738496
1964	56.596616
1965	57.631869
1966	58.489874
1967	59.607467
1968	60.511486
1969	61.762495
1970	62.680698
1971	63.646332
1972	64.942269
1973	66.134876
1974	67.237046
1975	67.757738
1976	68.96681
1977	69.838507
1978	70.875721
1979	72.03105
1980	72.797618
1981	73.557041
1982	74.370931
1983	75.307476
1984	76.244703
1985	76.796434
1986	77.158382
1987	77.308961
1988	77.540281
1989	77.783296
1990	78.26878
1991	77.977143
1992	78.03
1993	79.147402
1994	79.190576
1995	79.82943
1996	79.76026
1997	80.411597
1998	83.687929
1999	84.065229
2000	85.201001
2001	85.610317
2002	86.003111
2003	86.411876
2004	86.800492
2005	87.088233
2006	87.402094
2007	87.699894
2008	88.000879
2009	88.297736
2010	88.775152
2011	89.257727
2012	89.719898
2013	90.09512
2014	89.690402
2015	89.192035
2016	89.60281
2017	89.994528
2018	90.408652
2019	90.817213
2020	91.209737
2021	89.643593
2022	91.10532