Year	% of cohort
1960	65.26753819200724
1961	65.87381761956715
1962	65.65831987954655
1963	65.76529909687976
1964	66.44176736405969
1965	66.5262355476406
1966	66.85244178056962
1967	67.22801239682384
1968	67.03123068566441
1969	66.85327555793474
1970	67.386747143456
1971	67.95139413001165
1972	68.22526928553914
1973	68.63900692048584
1974	69.22170110114749
1975	69.5649266008346
1976	69.99818449165373
1977	70.43785996206063
1978	70.65975163177963
1979	71.16201670020146
1980	71.23687629719542
1981	71.9226329842242
1982	72.41780232805627
1983	72.5176847641656
1984	72.9533780505528
1985	73.22667149906316
1986	73.81055086860043
1987	74.15999576774705
1988	74.40635105322447
1989	74.72395754513684
1990	74.99947322523424
1991	75.12084844229106
1992	75.2346659303503
1993	75.36008851587316
1994	75.8351558337963
1995	76.04230467084733
1996	76.75902826762646
1997	77.57038178596322
1998	78.05532450258133
1999	78.34471498792945
2000	78.74336489618148
2001	79.13334682245393
2002	79.36126648528189
2003	79.5458751179532
2004	80.1350404100288
2005	80.2409005830399
2006	80.71114130290583
2007	81.02338163474103
2008	81.36435205732434
2009	81.84521434485917
2010	82.24767957421511
2011	82.5427220691903
2012	82.86658399290052
2013	83.08637469732047
2014	83.34259044833735
2015	83.42223582622788
2016	83.60810642571393
2017	83.80313106133413
2018	83.91270313934933
2019	84.17200672611412
2020	82.89862599532454
2021	82.24101659299379
2022	83.21127484771424