Year	% of cohort
1960	65.71248901265265
1961	66.10561943683264
1962	65.2261237781413
1963	66.66757967510402
1964	67.52774064094338
1965	67.628912144485
1966	68.16314711577483
1967	67.08467452077728
1968	67.10184928858004
1969	65.8192953943287
1970	66.16556411684728
1971	65.81686896956882
1972	67.01626158958172
1973	66.68568696531032
1974	67.28086599757115
1975	66.50306151887808
1976	66.27197390145524
1977	65.70506275415214
1978	65.2950068549165
1979	65.10967731659287
1980	63.86384365116182
1981	64.53023310190753
1982	64.74775087421014
1983	63.76426175216747
1984	63.439764035293464
1985	63.06031215440211
1986	63.55800635401665
1987	63.47425515861184
1988	63.74056607107658
1989	63.230672780229746
1990	62.74075174070233
1991	62.07566666554102
1992	62.240817237723476
1993	62.78097377112397
1994	62.9751642122026
1995	63.04883381933122
1996	63.916530000052305
1997	64.30240230603039
1998	64.93827227305145
1999	65.49526475658804
2000	66.90168905383986
2001	67.49409637197951
2002	67.59691744280907
2003	67.48889504165757
2004	67.62410993717425
2005	68.19413510346045
2006	68.77365750416865
2007	69.26357232903781
2008	70.19716751633962
2009	70.94902359052448
2010	71.7230444740645
2011	72.51194386267561
2012	72.90647821020472
2013	73.82672446787092
2014	74.49094659205636
2015	74.40773549442281
2016	75.06213139257602
2017	75.49870314147593
2018	75.65263754090878
2019	76.32771989975778
2020	75.48830424532736
2021	74.2786750460783
2022	74.93309042704449