| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 12 years | 153 |
5.2%
|
| 2 | 12 years old | 267 |
9%
|
| 3 | 13 years old | 465 |
15.7%
|
| 4 | 14 years old | 628 |
21.2%
|
| 5 | 15 years old | 610 |
20.6%
|
| 6 | 16 years old | 498 |
16.8%
|
| 7 | More than 16 years | 342 |
11.5%
|
| Sysmiss | 22 |