Year	% of cohort
1960	32.59023703592099
1961	32.71135928644596
1962	33.163468429630186
1963	33.060478421990126
1964	33.75168466862216
1965	33.62001865968382
1966	33.38036487467165
1967	34.19558813936398
1968	34.5980787331784
1969	34.82618372899026
1970	35.215364211481656
1971	35.748023024502224
1972	35.36292770361608
1973	36.7413928700105
1974	36.63203886768843
1975	36.89280662201416
1976	37.44852420114109
1977	37.748622044605085
1978	37.70608778915909
1979	38.559535332563264
1980	39.17502872329302
1981	39.729265892495235
1982	39.92049265407765
1983	37.64657720889203
1984	37.06900621534013
1985	37.42720408703442
1986	38.071191935445135
1987	38.16908119832177
1988	37.0276015844122
1989	38.69387347185128
1990	38.22931992434431
1991	37.98994605149455
1992	37.110918455826095
1993	37.14221948263718
1994	38.719424012017605
1995	38.27029171156429
1996	37.66658742654239
1997	37.83555576390392
1998	36.2192268535091
1999	37.45566162760336
2000	39.155033740362256
2001	39.364848711676224
2002	39.65358837731382
2003	40.29099865496952
2004	40.943581651904466
2005	41.825815655752024
2006	43.22721948948644
2007	44.27663672604331
2008	45.24660474873901
2009	46.51469038030329
2010	47.7471575086645
2011	49.0272963931736
2012	50.23107410990591
2013	51.12215387154575
2014	52.07387965902823
2015	52.89582673689949
2016	53.808179580394295
2017	54.72324830634524
2018	55.366610882384734
2019	56.13416155965643
2020	54.66677582331687
2021	52.276664139612734
2022	53.15241061939558