| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 126 |
4.6%
|
| 2 | 12 years old | 314 |
11.5%
|
| 3 | 13 years old | 565 |
20.7%
|
| 4 | 14 years old | 577 |
21.1%
|
| 5 | 15 years old | 683 |
25%
|
| 6 | 16 years old | 343 |
12.5%
|
| 7 | 17 years old or older | 128 |
4.7%
|
| Sysmiss | 36 |