| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 353 |
21.3%
|
| 2 | 12 years old | 368 |
22.2%
|
| 3 | 13 years old | 398 |
24%
|
| 4 | 14 years old | 316 |
19.1%
|
| 5 | 15 years old | 150 |
9%
|
| 6 | 16 years old | 55 |
3.3%
|
| 7 | 17 years old or older | 18 |
1.1%
|
| Sysmiss | 14 |