Year	% of relevant age group
1970	76.66587
1971	76.0202
1972	85.35932
1973	86.98123
1975	140.03197
1976	113.18921
1977	114.42347
1978	108.20127
1979	168.11541
1980	137.98926
1981	122.81075
1998	99.88594
1999	96.74915
2004	108.26583
2005	99.78326
2014	96.25907
2015	95.08817
2016	94.0614