Year	% of relevant age group
1974	37.2683486938477
1975	38.7145118713379
1976	39.4172401428223
1977	40.6093902587891
1978	43.758228302002
1979	44.6794700622559
1980	45.5116386413574
1981	45.8279304504395
1982	45.9796104431152
1983	46.7485809326172
1984	48.184211730957
1985	49.9401893615723
1986	51.9206390380859
1987	52.2828788757324
1988	54.9230995178223
1989	56.3616905212402
1990	57.2065315246582
1991	57.0090293884277
1992	58.5214500427246
1993	59.7456092834473
1994	61.5222015380859
1995	62.292911529541
1996	62.9303283691406
1997	62.6940689086914
1998	63.2957916259766
1999	63.8778190612793
2000	64.7497863769531
2001	66.4380264282227
2002	68.5215301513672
2003	70.4120101928711
2004	70.2339324951172
2005	70.473876953125
2006	67.9623565673828
2007	67.5723571777344
2008	67.1496734619141
2009	69.0844116210938
2010	69.0937194824219
2011	70.70751953125
2012	74.0276184082031
2013	71.6736373901367
2014	70.5660705566406
2015	70.3214797973633
2016	70.1619033813477
2017	69.4742126464844
2018	69.8864974975586
2019	70.7615509033203
2020	71.0984268188477
2021	74.1826477050781
2022	72.4612731933594