Year	% of relevant age group
1971	98.95415
1972	98.08898
1973	95.98612
1974	96.19721
1975	96.90923
1976	103.29302
1977	103.03331
1978	101.58266
1979	99.52633
1980	95.42376
1981	92.52347
1982	92.86266
1983	92.76486
1984	95.26122
1985	101.10614