Year	% of cohort
1960	63.39177922092425
1961	63.74699531426792
1962	63.365675527515826
1963	63.76849253093756
1964	64.62022553174221
1965	64.46528053723767
1966	64.6928622542808
1967	64.55729630741813
1968	64.38873844016973
1969	63.59448358982519
1970	64.17170713605032
1971	64.25303611137579
1972	64.63104173957176
1973	64.79563962234587
1974	64.9949168632861
1975	64.65898958697768
1976	64.66422102881037
1977	64.81104272736833
1978	64.70933509623397
1979	64.65126045383192
1980	64.62710959239656
1981	65.1243235352576
1982	65.63887432650965
1983	65.53353796103112
1984	65.55170403265778
1985	66.05523139126284
1986	67.44507680958327
1987	67.66267975106314
1988	67.6683743469992
1989	67.71041406031296
1990	67.44980843569046
1991	67.1647226214074
1992	66.47986575587105
1993	65.41303303849317
1994	65.31688415946621
1995	65.52552832090427
1996	66.63175846083607
1997	67.66806553450145
1998	68.30068326124004
1999	67.84019873091096
2000	68.12266084487744
2001	68.48504040305801
2002	68.52282362384459
2003	68.74253640290176
2004	69.45553334614553
2005	69.72566084331699
2006	70.78199073546692
2007	71.52338221371329
2008	72.02863754912269
2009	72.82525910156991
2010	73.33582716020722
2011	74.09413774107922
2012	74.7137276794758
2013	75.34772300070206
2014	75.91255413696973
2015	76.37241176055737
2016	77.07068388259452
2017	77.8146953318135
2018	78.0904829895801
2019	78.69539092919038
2020	76.37640206555584
2021	75.35805562222622
2022	76.60259266295617