Year	% of relevant age group
1974	22.4526100158691
1975	22.9995098114014
1976	23.8175106048584
1977	24.9589099884033
1978	26.9999504089355
1979	27.666109085083
1980	28.5144805908203
1981	29.3317108154297
1982	30.0461902618408
1983	31.0569305419922
1984	32.2611312866211
1985	34.1618499755859
1986	36.1047286987305
1987	37.2926597595215
1988	39.2822799682617
1989	40.9924697875977
1990	43.0709800720215
1991	43.9845809936523
1992	45.854190826416
1993	47.6837310791016
1994	50.7179794311523
1995	52.1113510131836
1996	53.3688888549805
1997	54.4396095275879
1998	55.9973907470703
1999	57.5611991882324
2000	59.0601081848145
2001	60.2337799072266
2002	62.140869140625
2003	64.1678924560547
2004	64.6433334350586
2005	65.700569152832
2006	64.9568023681641
2007	65.7952270507812
2008	66.0261001586914
2009	67.809928894043
2010	66.5920181274414
2011	68.8146820068359
2012	74.0874176025391
2013	68.8139572143555
2014	67.6763305664062
2015	67.7721862792969
2016	67.9150619506836
2017	67.5561065673828
2018	68.039421081543
2019	68.9672698974609
2020	69.7187805175781
2021	72.1520690917969
2022	72.2910766601562