| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 102 |
5.9%
|
| 2 | 12 years old | 96 |
5.6%
|
| 3 | 13 years old | 200 |
11.6%
|
| 4 | 14 years old | 355 |
20.6%
|
| 5 | 15 years old | 356 |
20.7%
|
| 6 | 16 years old | 340 |
19.7%
|
| 7 | 17 years old or older | 273 |
15.9%
|
| Sysmiss | 82 |