Year	% of relevant age group
1975	100.03838
1976	99.93453
1977	98.86789
1978	96.94329
1981	94.89552
1998	105.01609
1999	97.98383
2000	93.96577
2001	95.69106
2005	95.11003
2015	93.7864
2016	96.76357
2017	96.12859
2018	96.75865