| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 174 |
7%
|
| 2 | 12 years old | 373 |
15%
|
| 3 | 13 years old | 409 |
16.4%
|
| 4 | 14 years old | 371 |
14.9%
|
| 5 | 15 years old | 349 |
14%
|
| 6 | 16 years old | 344 |
13.8%
|
| 7 | 17 years old or older | 471 |
18.9%
|
| Sysmiss | 15 |