Year	% of cohort
1960	70.217313
1961	70.968198
1962	71.879925
1963	73.30153
1964	73.880106
1965	75.13064
1966	76.383784
1967	76.438723
1968	77.018991
1969	76.700043
1970	76.244298
1971	77.718115
1972	78.717315
1973	78.892221
1974	79.69594
1975	79.485468
1976	80.149701
1977	79.907266
1978	79.670635
1979	78.310648
1980	80.647199
1981	80.161236
1982	80.304972
1983	80.622712
1984	83.028626
1985	83.964852
1986	84.551536
1987	85.338892
1988	87.620386
1989	86.887033
1990	87.848166
1991	88.604296
1992	86.572842
1993	86.771006
1994	83.549239
1995	85.711519
1996	84.41677
1997	84.896988
1998	85.099577
1999	83.303564
2000	84.324166
2001	84.817851
2002	84.926355
2003	84.718753
2004	85.935097
2005	85.255211
2006	84.635949
2007	85.20862
2008	86.520759
2009	86.145424
2010	87.412437
2011	87.56578
2012	87.065161
2013	88.088199
2014	88.490709
2015	88.151642
2016	88.231943
2017	88.661399
2018	88.717789
2019	89.042931
2020	88.273418
2021	88.728308
2022	89.220937