| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 217 |
9.6%
|
| 2 | 12 years old | 216 |
9.6%
|
| 3 | 13 years old | 305 |
13.5%
|
| 4 | 14 years old | 334 |
14.8%
|
| 5 | 15 years old | 396 |
17.6%
|
| 6 | 16 years old | 403 |
17.9%
|
| 7 | 17 years old or older | 381 |
16.9%
|
| Sysmiss | 25 |