Year	% of relevant age group
1971	5.54961013793945
1972	6.25134992599487
1973	6.60768985748291
1974	7.79500007629395
1975	8.75265026092529
1976	8.78806972503662
1977	9.52793025970459
1978	10.3344297409058
1979	10.5545902252197
1980	10.6464996337891
1981	11.3636198043823
1982	11.8091802597046
1983	12.6472196578979
1984	13.8554401397705
1985	13.7440500259399
1986	14.7537498474121
1987	15.8874998092651
1988	17.1360092163086
1990	22.700080871582
1991	21.6235809326172
2003	22.7849998474121
2006	18.7745609283447
2007	20.1438903808594
2008	26.5708999633789
2009	25.0302791595459
2010	32.7120018005371
2011	41.4076995849609
2012	42.4280014038086
2013	42.7517700195312
2014	36.8179817199707
2015	46.377269744873
2016	47.5099716186523
2017	42.556999206543
2018	41.0349998474121
2019	37.5670013427734
2020	36.2190017700195
2021	35.598258972168
2022	35.3751602172852