Year	% of cohort
1960	71.573882
1961	71.809594
1962	72.046282
1963	72.829506
1964	73.138672
1965	73.333181
1966	74.058816
1967	74.202799
1968	74.42829
1969	75.262459
1970	75.578011
1971	75.842966
1972	76.880406
1973	77.129226
1974	78.202981
1975	78.344122
1976	78.592487
1977	78.732879
1978	79.569251
1979	79.823479
1980	80.049831
1981	80.252352
1982	80.431027
1983	80.705464
1984	80.896461
1985	80.9972
1986	81.28811
1987	81.924738
1988	82.133641
1989	81.881461
1990	82.535606
1991	82.745927
1992	82.859805
1993	83.025742
1994	83.278297
1995	83.31804
1996	83.548458
1997	83.709928
1998	83.982901
1999	84.122502
2000	84.306345
2001	84.533392
2002	84.7388
2003	84.985626
2004	85.19033
2005	85.405677
2006	85.702574
2007	85.984409
2008	86.256687
2009	86.417135
2010	87.346112
2011	88.104248
2012	88.189145
2013	89.043275
2014	89.126524
2015	89.566459
2016	89.587833
2017	89.606849
2018	89.568568
2019	89.61348
2020	89.604593
2021	88.700428
2022	90.054893