| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 514 |
16.7%
|
| 2 | 12 years old | 617 |
20%
|
| 3 | 13 years old | 472 |
15.3%
|
| 4 | 14 years old | 463 |
15%
|
| 5 | 15 years old | 412 |
13.4%
|
| 6 | 16 years old | 373 |
12.1%
|
| 7 | 17 years old or older | 232 |
7.5%
|
| Sysmiss | 26 |