| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 139 |
5%
|
| 2 | 12 years old | 232 |
8.4%
|
| 3 | 13 years old | 395 |
14.3%
|
| 4 | 14 years old | 606 |
21.9%
|
| 5 | 15 years old | 619 |
22.4%
|
| 6 | 16 years old | 434 |
15.7%
|
| 7 | 17 years old or older | 339 |
12.3%
|
| Sysmiss | 17 |