Age (years) | Girls n (%) | Cumulative percentage | Boys n (%) | Cumulative percentage | Both sexes n (%) | Total cumulative percentage (%) |
8 - 9 | 0 (0.0) | 0 | 3 (1.4) | 1.4 | 3 (0.5) | 0.5 |
9 - 10 | 4 (1.2) | 1.2 | 3 (1.4) | 2.8 | 7 (1.3) | 1.8 |
10 - 11 | 1 (0.3) | 1.5 | 3 (1.4) | 4.2 | 4 (0.7) | 2.5 |
11 - 12 | 15 (4.4) | 5.9 | 8 (3.8) | 8.0 | 23 (4.2) | 6.7 |
12 - 13 | 25 (7.4) | 13.3 | 9 (4.3) | 12.3 | 34 (6.2) | 12.9 |
13 - 14 | 35 (10.4) | 23.7 | 19 (9.1) | 21.4 | 54 (9.9) | 22.8 |
14 - 15 | 46 (13.6) | 37.3 | 27 (13.0) | 34.4 | 73 (13.4) | 36.2 |
15 - 16 | 71 (21.0) | 58.3 | 38 (18.3) | 52.7 | 109 (20.0) | 56.2 |
16 - 17 | 47 (13.9) | 72.2 | 38 (18.3) | 71.0 | 85 (15.6) | 71.8 |
17 - 18 | 43 (12.7) | 84.9 | 32 (15.4) | 86.4 | 75 (13.7) | 85.5 |
18 - 19 | 32 (9.5) | 94.4 | 13 (6.3) | 92.7 | 45 (8.2) | 93.7 |
19 - 20 | 19 (5.6) | 100.0 | 15 (7.2) | 99.9 | 34 (6.2) | 99.9 |
Total | 338 (100.0) |
| 208 (99.9) |
| 546 (99.9) |
|