Year	% of relevant age group
1976	16.2258491516113
1977	17.712459564209
1978	17.6805591583252
1979	17.6700992584229
1980	17.4076900482178
1981	17.3410396575928
1983	18.8205299377441
1984	19.8074398040771
2000	24.8742694854736
2001	27.1725196838379
2002	37.9178314208984
2004	37.3785705566406
2005	41.6377983093262
2007	50.4109992980957
2008	65.4354934692383
2009	63.6617584228516
2010	59.7226905822754
2011	57.5290794372559
2012	55.798770904541
2013	55.749568939209