| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 121 |
7%
|
| 2 | 12 years old | 129 |
7.5%
|
| 3 | 13 years old | 302 |
17.5%
|
| 4 | 14 years old | 361 |
20.9%
|
| 5 | 15 years old | 482 |
27.9%
|
| 6 | 16 years old | 255 |
14.8%
|
| 7 | 17 years old or older | 76 |
4.4%
|
| Sysmiss | 24 |