Year	% of relevant age group
1971	44.4234199523926
1972	78.2610397338867
1973	66.8478927612305
1974	76.8301086425781
1975	89.9850616455078
1976	81.860237121582
1977	85.6207275390625
1978	87.3916320800781
1979	87.1295776367188
1980	84.8444595336914
1981	90.9416885375977
1983	104.358726501465