Year	% of cohort
1960	36.72411547617368
1961	37.38241655237117
1962	37.99484317926485
1963	38.411247805944626
1964	39.41921804553694
1965	39.6336835430154
1966	40.32898899266753
1967	41.128450044934304
1968	41.91126111712702
1969	42.441134040247256
1970	41.57182719187819
1971	40.11250244944296
1972	43.89708301971054
1973	44.67238818300716
1974	44.76583957515995
1975	45.021410017792135
1976	45.87123490110418
1977	46.82718828627393
1978	47.57412234444217
1979	48.2935709992018
1980	49.01010886893249
1981	49.66750699294868
1982	50.082258285964194
1983	49.82764975675505
1984	50.1839313546885
1985	50.29811870752549
1986	50.686001575403736
1987	51.120928782619195
1988	51.09682655753439
1989	51.627429086497756
1990	51.93327588463543
1991	51.41540726495879
1992	51.864573530043515
1993	51.946750774448674
1994	52.36300448591814
1995	52.51064610074319
1996	52.51312709348763
1997	53.42549277647765
1998	53.97433161654124
1999	55.26368023307727
2000	55.61948794659795
2001	56.12578874313995
2002	56.746514861023094
2003	57.46239260815075
2004	57.8244665382614
2005	58.62412699330354
2006	59.75555578903058
2007	60.39798622221491
2008	60.55299100510796
2009	61.8808876175329
2010	62.65156814315575
2011	63.73893707706573
2012	64.44636460094218
2013	65.27696762134394
2014	65.74932402711576
2015	66.32567587904154
2016	67.00409273516713
2017	67.69029270557861
2018	68.21114536984881
2019	68.78448419874898
2020	67.60086477278598
2021	66.69558370468734
2022	68.22504284480621