Year	% of cohort
1960	61.390979
1961	62.462097
1962	64.063101
1963	65.218277
1964	66.408899
1965	67.49433
1966	68.593424
1967	69.859083
1968	70.837457
1969	71.880825
1970	72.795887
1971	73.711446
1972	74.086977
1973	75.030645
1974	75.986926
1975	76.341991
1976	77.187416
1977	77.429272
1978	78.300831
1979	78.558818
1980	78.841455
1981	79.714716
1982	79.89031
1983	80.088979
1984	80.867797
1985	81.05096
1986	81.290138
1987	81.992385
1988	81.266262
1989	82.202012
1990	83.201424
1991	82.023781
1992	82.966354
1993	82.358512
1994	82.209613
1995	82.133127
1996	83.781246
1997	83.782389
1998	83.514532
1999	83.435645
2000	83.151263
2001	84.759848
2002	84.480652
2003	84.736294
2004	85.809595
2005	86.90443
2006	88.682456
2007	89.46823
2008	89.771635
2009	90.23951
2010	90.635504
2011	90.636841
2012	90.818381
2013	91.736022
2014	91.919988
2015	92.200993
2016	92.745585
2017	92.96787
2018	93.010695
2019	93.083403
2020	91.554088
2021	91.376747
2022	93.56146