| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 150 |
7.5%
|
| 2 | 12 years old | 367 |
18.4%
|
| 3 | 13 years old | 594 |
29.7%
|
| 4 | 14 years old | 564 |
28.2%
|
| 5 | 15 years old | 256 |
12.8%
|
| 6 | 16 years old or older | 69 |
3.5%
|
| Sysmiss | 21 |