| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 133 |
4.6%
|
| 2 | 12 years old | 248 |
8.6%
|
| 3 | 13 years old | 376 |
13%
|
| 4 | 14 years old | 651 |
22.4%
|
| 5 | 15 years old | 647 |
22.3%
|
| 6 | 16 years old | 398 |
13.7%
|
| 7 | 17 years old or older | 447 |
15.4%
|
| Sysmiss | 20 |