| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 153 |
8.8%
|
| 2 | 12 years old | 296 |
17%
|
| 3 | 13 years old | 395 |
22.7%
|
| 4 | 14 years old | 414 |
23.8%
|
| 5 | 15 years old | 274 |
15.8%
|
| 6 | 16 years old | 153 |
8.8%
|
| 7 | 17 years old or older | 54 |
3.1%
|
| Sysmiss | 81 |