| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 80 |
5.6%
|
| 2 | 12 years old | 232 |
16.4%
|
| 3 | 13 years old | 326 |
23%
|
| 4 | 14 years old | 329 |
23.2%
|
| 5 | 15 years old | 226 |
15.9%
|
| 6 | 16 years old | 133 |
9.4%
|
| 7 | 17 years old or older | 91 |
6.4%
|
| Sysmiss | 62 |