| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 32 |
1.7%
|
| 2 | 12 years old | 332 |
17.8%
|
| 3 | 13 years old | 712 |
38.2%
|
| 4 | 14 years old | 528 |
28.3%
|
| 5 | 15 years old | 241 |
12.9%
|
| 6 | 16 years old or older | 18 |
1%
|
| Sysmiss | 84 |