Year	% of relevant age group
1973	82.54449
1974	83.9508
1975	86.68898
1976	88.74152
1977	83.58234
1978	93.96287
1979	84.36506
1980	81.35827
1981	83.35714
1982	83.06465
1983	86.06035
1984	80.96838
1985	82.71329
1986	81.60325
1987	84.85527
1988	82.10544
1990	74.75063
1991	74.60917
1999	65.64598
2000	69.11674
2001	107.68236
2002	93.2638
2003	86.29517
2004	88.44403
2005	90.6202
2006	93.18541
2007	96.05681
2008	101.38272
2009	107.46719
2010	110.73268
2011	112.23663
2012	115.69646
2014	119.71853
2015	123.66167
2016	122.77907
2017	119.29314
2018	110.47883