| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 82 |
3.3%
|
| 2 | 12 years old | 325 |
13%
|
| 3 | 13 years old | 898 |
35.8%
|
| 4 | 14 years old | 687 |
27.4%
|
| 5 | 15 years old | 454 |
18.1%
|
| 6 | 16 years old or older | 62 |
2.5%
|
| Sysmiss | 60 |