Year	% of relevant age group
1971	10.50442
1972	11.99585
1973	12.17068
1974	12.41763
1975	12.03012
1976	12.13626
1977	11.98724
1978	13.32378
1979	13.68365
1980	15.09575
1981	16.30811
1982	17.40851
1983	18.9834
1984	19.72477
1985	23.82773
1987	24.34522
1988	22.06728
1989	25.65352
1990	25.99213
1991	26.62296
1992	25.02674
1993	28.35191
1994	27.77163
1995	35.5278
1996	35.87926
1999	38.51352
2000	39.52245
2001	41.85015
2002	43.79278
2003	49.10153
2004	66.03634
2005	68.46562
2006	69.14674
2007	77.43007
2008	86.00839
2009	81.47572
2010	87.21232
2011	87.92227
2012	89.94089
2013	92.75426
2014	96.8213
2015	102.0643
2016	103.40907
2017	106.10846
2018	108.13255