| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 119 |
5.7%
|
| 2 | 12 years old | 376 |
18%
|
| 3 | 13 years old | 384 |
18.4%
|
| 4 | 14 years old | 440 |
21%
|
| 5 | 15 years old | 400 |
19.1%
|
| 6 | 16 years old or older | 372 |
17.8%
|
| Sysmiss | 21 |