Year	% of relevant age group
1970	17.300760269165
1971	17.3292503356934
1972	17.684700012207
1973	17.9520492553711
1974	18.1808490753174
1975	18.3477401733398
1976	18.5096893310547
1977	18.8011703491211
1978	18.9746608734131
1979	19.1655292510986
1980	19.3468399047852
1981	19.5444297790527
1982	19.6841697692871
1983	19.698450088501
1984	19.7159004211426
1985	19.7639503479004
1986	19.9992809295654
1987	19.8093490600586
1988	19.8457107543945
1989	20.0468902587891
1990	20.8497791290283
1991	21.5781593322754
1992	21.8659191131592
1993	21.9209403991699
1994	21.9069309234619
1995	21.9293403625488
1996	21.8630790710449
1997	22.1854000091553
1998	22.3377990722656
1999	22.3095397949219
2000	22.6146106719971
2001	23.6225109100342
2002	26.5741901397705
2003	29.3251495361328
2004	30.490650177002
2005	31.6518898010254
2006	32.7968482971191
2007	34.2055892944336
2008	36.0983200073242
2009	37.4985389709473
2010	38.6591300964355
2011	39.3816719055176
2012	39.9094505310059
2013	40.189208984375
2014	39.9986000061035
2015	41.25
2016	41.8849105834961
2017	42.3173408508301
2018	42.9233283996582
2019	42.7866096496582
2020	42.9573402404785
2021	43.0194511413574
2022	42.5415191650391