| Value | Category | Cases | |
|---|---|---|---|
| 1 | 12 years old | 55 |
3.8%
|
| 2 | 13 years old | 278 |
19.2%
|
| 3 | 14 years old | 411 |
28.4%
|
| 4 | 15 years old | 383 |
26.5%
|
| 5 | 16 years old | 236 |
16.3%
|
| 6 | 17 years old or older | 82 |
5.7%
|
| Sysmiss | 36 |