Year	% of relevant age group
1971	23.1553497314453
1972	21.7435302734375
1973	26.9802303314209
1974	23.878210067749
1975	30.2894706726074
1976	25.8479595184326
1977	27.4845294952393
1978	34.207160949707
1981	26.9005508422852
1982	27.199649810791
1983	24.8811092376709
1986	38.2170295715332
1987	29.3215408325195
1988	30.4736194610596
1989	29.9233798980713
1990	31.1846294403076
1991	28.3375091552734
1992	22.3714199066162
2004	21.4367904663086
2005	23.4272594451904
2006	23.3881797790527
2008	31.3127098083496
2009	33.8084297180176
2010	35.7396583557129
2011	36.9948310852051
2012	38.5165786743164
2016	36.9948997497559
2017	48.7290000915527