| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 71 |
3.9%
|
| 2 | 12 years old | 267 |
14.5%
|
| 3 | 13 years old | 375 |
20.4%
|
| 4 | 14 years old | 412 |
22.4%
|
| 5 | 15 years old | 417 |
22.7%
|
| 6 | 16 years old or older | 295 |
16.1%
|
| Sysmiss | 18 |