APPROXIMATE YEAR OF BIRTH 



i — i — i — i — i — i — i — i — i i i I i r 



-i — i — i — i — i — r 



i i i I 



IOn 



B 



A 



05- 



m 



UJ 



en 



feo-o 



x 



h; 



< 



O 



5- 



•0 



Fig. 14. Composite age distribution, logarithmic. 



