| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 20 |
1.4%
|
| 2 | 12 years old | 18 |
1.3%
|
| 3 | 13 years old | 472 |
33.7%
|
| 4 | 14 years old | 536 |
38.3%
|
| 5 | 15 years old | 333 |
23.8%
|
| 6 | 16 years old or older | 20 |
1.4%
|
| Sysmiss | 23 |