Year	% of relevant age group
1977	98.78386
1978	98.29089
1979	98.06123
1980	97.84203
1981	89.19008
1982	89.47201
1983	88.45949
1984	90.01412
1985	91.5662
1986	93.42389
1987	95.78506
1988	98.82611
1989	101.40765
1990	102.03323
1991	97.50677
1992	96.2382
1993	94.32184
1994	93.56996
1996	103.35066
1998	105.1156
1999	95.48114
2000	93.91451
2001	89.57153
2002	87.86001
2003	89.03582
2004	89.61704
2005	89.10717
2006	90.61842
2007	91.69518
2008	92.30885
2009	92.00081
2010	92.0754
2011	94.21362
2012	95.17787
2013	95.28439
2014	93.97478
2015	97.34476
2016	98.08082
2017	99.15966