| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 101 |
4%
|
| 2 | 12 years old | 432 |
17%
|
| 3 | 13 years old | 520 |
20.5%
|
| 4 | 14 years old | 536 |
21.1%
|
| 5 | 15 years old | 439 |
17.3%
|
| 6 | 16 years old | 368 |
14.5%
|
| 7 | 17 years old or older | 140 |
5.5%
|
| Sysmiss | 4 |