Year	% of relevant age group
1971	14.88141
1972	14.7663
1973	17.57818
1974	18.95228
1975	20.57113
1976	20.87983
1977	13.42221
1978	20.61856
1979	29.07183
1980	36.8654
1981	56.28743
1982	57.12798
1983	57.49471
1984	60.00641
1985	57.81569
1986	58.0365
1987	49.30194
1989	41.11206
1992	54.8926
1993	58.36704
1994	63.10686
1995	63.76982
1996	74.97485
1997	74.01175
1998	70.45725
1999	87.8107
2000	89.24446
2001	89.4001
2002	86.90499
2003	98.44214
2004	96.28635
2005	88.46137
2006	92.61768
2007	90.05651
2008	90.45794
2010	91.00504
2011	90.34456
2012	100.44576
2013	101.63559
2014	110.36074
2015	110.65232
2016	107.11113