Year	% of relevant age group
1971	94.3958587646484
1972	94.9177322387695
1973	92.8947906494141
1974	93.2897109985352
1975	92.861198425293
1976	92.2969207763672
1977	93.9813613891602
1978	93.9028167724609
1979	93.3564224243164
1980	93.1147613525391
1981	91.32666015625
1982	93.2765731811523
1983	94.5974426269531
1984	95.1418304443359
1985	95.7400207519531