| Value | Category | Cases | |
|---|---|---|---|
| 1 | 12 years old | 35 |
3.5%
|
| 2 | 13 years old | 111 |
11.1%
|
| 3 | 14 years old | 148 |
14.8%
|
| 4 | 15 years old | 205 |
20.5%
|
| 5 | 16 years old | 160 |
16%
|
| 6 | 17 years old or older | 339 |
34%
|
| Sysmiss | 8 |