Year	% of cohort
1960	85.211926
1961	85.125942
1962	85.199665
1963	85.124796
1964	85.706756
1965	85.77391
1966	86.075088
1967	86.277096
1968	86.333978
1969	85.712502
1970	86.971062
1971	87.030331
1972	87.076981
1973	87.333104
1974	87.43739
1975	87.399317
1976	87.359278
1977	87.938572
1978	87.944116
1979	88.217644
1980	88.539444
1981	88.540064
1982	88.566055
1983	88.728175
1984	88.56936
1985	88.426029
1986	88.478493
1987	88.422124
1988	88.409487
1989	88.639518
1990	88.871502
1991	89.180437
1992	89.214152
1993	89.426475
1994	89.440846
1995	89.922973
1996	89.82468
1997	89.846247
1998	90.16389
1999	90.042705
2000	90.139982
2001	90.275325
2002	90.348515
2003	90.752263
2004	91.038586
2005	90.992574
2006	91.277331
2007	91.447317
2008	91.738457
2009	91.808711
2010	91.822945
2011	91.994249
2012	92.504908
2013	92.395444
2014	92.897994
2015	93.056963
2016	93.044835
2017	93.448653
2018	93.469671
2019	93.718548
2020	93.846527
2021	94.24074
2022	93.993172