Year	% of cohort
1960	39.49325423681053
1961	39.969956474743995
1962	40.46871442691316
1963	40.84198658243618
1964	41.46685161050225
1965	40.82865583972291
1966	41.55565584792266
1967	42.06313441402691
1968	43.49350423693441
1969	44.10752420115755
1970	43.93328773617086
1971	43.465341312980954
1972	45.48213676588356
1973	46.3130148456098
1974	46.92330422677809
1975	47.904303160150995
1976	48.71607038726056
1977	49.83989145344795
1978	50.860067486650216
1979	51.802349392687105
1980	52.72391424063837
1981	53.61205377135717
1982	54.411588541046434
1983	55.26381161578253
1984	56.02632227916449
1985	56.606745705140035
1986	57.18058930038734
1987	57.7517621794527
1988	58.369668806296076
1989	58.87949115090055
1990	59.45178342153901
1991	59.67292885298671
1992	60.283327031647765
1993	60.52917839477526
1994	60.898475065703444
1995	61.26128258950855
1996	61.60585575106721
1997	62.33843899854361
1998	63.04418662120656
1999	63.893962049120255
2000	64.40847667069939
2001	65.01389876696271
2002	65.77174747110234
2003	66.51470317998223
2004	67.07020158521507
2005	67.8244172144879
2006	68.63597977148486
2007	69.20762273610866
2008	69.53791546768458
2009	70.37561737634425
2010	70.97406556632525
2011	71.65625070043649
2012	72.16302403112122
2013	72.6177059452022
2014	72.96515800920396
2015	73.26889295506302
2016	73.62589645954642
2017	74.08985312203129
2018	74.46320517880409
2019	74.88001191003481
2020	73.9799419371534
2021	70.58484400014432
2022	72.03297254350092