Year	% of relevant age group
1974	9.39311981201172
1975	10.5560302734375
1976	11.2945499420166
1977	12.651439666748
1978	12.5409698486328
1979	12.1448402404785
1980	14.6887502670288
1981	14.3727798461914
1982	16.6172008514404
1983	17.0818405151367
1984	18.4239101409912
1985	19.2407608032227
1986	18.4238395690918
1987	17.501220703125
1988	17.641300201416
1989	18.2312698364258
1990	18.7416801452637
1991	21.468620300293
1992	18.5926609039307
1993	24.2312297821045
1994	18.7566394805908
1995	35.2355003356934
1996	34.6430397033691
1999	23.9796009063721
2005	15.118670463562
2006	19.5254306793213
2007	16.6610794067383
2008	17.5144596099854
2009	19.0330390930176
2010	18.0085105895996
2011	18.1019096374512
2012	18.2000999450684
2013	20.2901802062988
2014	21.6060009002686
2015	22.0610008239746
2021	20.068000793457
2022	21.5380001068115