| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 110 |
4.9%
|
| 2 | 12 years old | 476 |
21.3%
|
| 3 | 13 years old | 629 |
28.2%
|
| 4 | 14 years old | 567 |
25.4%
|
| 5 | 15 years old | 309 |
13.9%
|
| 6 | 16 years old or older | 139 |
6.2%
|
| Sysmiss | 19 |