1958–1962
1963–1967
0–4
19
3
22
84.2
5–14
98
35
133
64.3
15–24
82
46
128
43.9
25–44
112
64
176
42.9
45–64
48
146
51.0
> 65
44
25
69
43.2
Total
453
221
674
51.2
From Gemmell and Roberts (1996)
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