Year	% of cohort
1960	76.6534491481802
1961	77.15908445499178
1962	76.64370575810372
1963	77.98444030787304
1964	78.86705364804288
1965	79.0480640311391
1966	79.7844987801692
1967	79.47001719818275
1968	79.69376318075723
1969	79.14573212303617
1970	79.56633694455898
1971	79.70327263213055
1972	80.45955481072163
1973	80.37017839275694
1974	80.91463470970024
1975	80.94294995160702
1976	81.02677746986969
1977	81.05057327888166
1978	81.15960127070746
1979	81.21354799429663
1980	80.73817415738363
1981	81.23632989280084
1982	81.35864614494426
1983	81.20720866484594
1984	81.33970230444856
1985	81.22802109574393
1986	81.69117930198205
1987	81.63444579744024
1988	81.95498240868059
1989	82.08957858221693
1990	82.22909851375715
1991	82.20062080100703
1992	82.43248504151428
1993	82.82766536165374
1994	83.08814709487163
1995	83.26350034823561
1996	83.53999081602453
1997	83.7823934205278
1998	84.2236770685197
1999	84.49335346772278
2000	85.01687478894037
2001	85.36624038522153
2002	85.46398546372012
2003	85.15808047280377
2004	85.26018919329589
2005	85.62572800805694
2006	86.00408309885457
2007	86.38689513846522
2008	87.01041967170924
2009	87.27065492752813
2010	87.63453237640125
2011	87.89152829416753
2012	87.95877857397026
2013	88.28343771252126
2014	88.51566111243672
2015	88.46048839010994
2016	88.89189917234468
2017	89.14563591092374
2018	89.23805093151316
2019	89.54265984636402
2020	89.3260993949748
2021	88.21388302307017
2022	88.37140107949239