Year	% of relevant age group
1975	102.72301
1976	102.50657
1977	100.51764
1978	99.90603
1981	96.24176
1998	109.48866
1999	103.5008
2000	98.27118
2001	99.6207
2005	96.75403
2015	99.0364
2016	96.14325
2017	95.36261
2018	97.08458