| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 136 |
7%
|
| 2 | 12 years old | 136 |
7%
|
| 3 | 13 years old | 196 |
10.1%
|
| 4 | 14 years old | 388 |
20.1%
|
| 5 | 15 years old | 448 |
23.2%
|
| 6 | 16 years old | 418 |
21.6%
|
| 7 | 17 years old or older | 210 |
10.9%
|
| Sysmiss | 53 |