| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 192 |
9.8%
|
| 2 | 12 years old | 166 |
8.5%
|
| 3 | 13 years old | 174 |
8.9%
|
| 4 | 14 years old | 348 |
17.8%
|
| 5 | 15 years old | 392 |
20.1%
|
| 6 | 16 years old | 326 |
16.7%
|
| 7 | 17 years old or older | 353 |
18.1%
|
| Sysmiss | 98 |