Year	% of relevant age group
1974	95.65044
1975	95.4937
1976	102.61639
1977	96.54619
1978	100.63553
1979	100.17689
1980	97.08047
1981	97.40791
1982	93.87027
1983	95.83147
1984	98.57008
1985	98.99208
1986	100.50502
1987	102.54628
1988	101.48063
1991	94.67341
2004	97.23276
2006	98.01692
2007	99.39685
2008	96.64191
2009	94.80501
2010	96.64809
2011	98.21292
2012	97.28215
2013	99.94111
2014	98.5628
2015	99.08476
2016	98.47758
2017	98.36288