| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 88 |
4.9%
|
| 2 | 12 years old | 313 |
17.6%
|
| 3 | 13 years old | 422 |
23.7%
|
| 4 | 14 years old | 386 |
21.7%
|
| 5 | 15 years old | 297 |
16.7%
|
| 6 | 16 years old | 143 |
8%
|
| 7 | 17 years old or older | 129 |
7.3%
|
| Sysmiss | 134 |