| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 248 |
13.2%
|
| 2 | 12 years old | 392 |
20.9%
|
| 3 | 13 years old | 453 |
24.2%
|
| 4 | 14 years old | 355 |
19%
|
| 5 | 15 years old | 244 |
13%
|
| 6 | 16 years old | 126 |
6.7%
|
| 7 | 17 years old or older | 54 |
2.9%
|
| Sysmiss | 33 |