Year	% of relevant age group
1979	8.56357002258301
1981	7.34243011474609
1984	7.28171014785767
1985	6.86453008651733
1987	6.52588987350464
1988	6.23219013214111
2000	22.0621700286865
2001	24.1266307830811
2002	26.3018493652344
2003	29.1832695007324
2004	30.6570796966553
2005	32.3471412658691
2006	37.080150604248
2007	39.7861785888672
2008	43.8920288085938
2009	46.339038848877
2010	49.3796691894531
2011	50.1256217956543
2012	47.5817108154297
2014	47.4369087219238
2015	45.7225608825684
2016	45.4761581420898
2017	44.5038299560547