Year	% of relevant age group
1973	18.1580505371094
1974	15.860369682312
1977	12.2258195877075
1978	16.0698699951172
1980	21.9919300079346
1981	27.539529800415
1982	17.8651294708252
1984	20.2005004882812
1985	19.138219833374
1993	31.5531005859375
2005	24.8791999816895
2016	66.1564636230469
2017	68.9264831542969
2018	71.6081771850586
2019	74.5066528320312