Year	% of relevant age group
1977	98.02381
1978	97.46124
1979	97.30489
1980	96.86029
1981	89.95892
1982	90.60226
1983	89.57323
1984	91.68399
1985	92.22338
1986	93.98511
1987	97.05112
1988	99.73373
1989	102.60244
1990	103.22598
1991	98.50839
1992	97.99579
1993	96.4076
1994	95.11017
1996	103.40415
1998	104.88565
1999	97.41759
2000	96.25241
2001	91.88523
2002	90.12144
2003	91.08276
2004	91.75712
2005	91.44616
2006	92.41846
2007	93.52016
2008	93.44644
2009	93.07432
2010	93.80035
2011	95.79073
2012	97.32547
2013	96.17151
2014	95.5446
2015	98.07257
2016	98.77135
2017	100.37137