Year	% of relevant age group
1971	9.39964962005615
1972	10.9999198913574
1973	13.1253900527954
1974	12.2912998199463
1975	14.5449895858765
1976	15.7627096176147
1978	16.6054992675781
1981	16.4874706268311
1982	16.4729900360107
1983	14.7851495742798
1986	27.7656307220459
1987	20.955150604248
1988	22.1163196563721
1989	20.5320606231689
1990	19.876350402832
1991	20.1123104095459
1992	15.5456600189209
2004	15.8681402206421
2005	17.6154899597168
2006	18.2165699005127
2008	23.4958992004395
2009	25.988639831543
2010	26.5254497528076
2011	28.6760292053223
2012	30.3383293151855
2016	29.8765296936035
2017	40.076000213623