| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 31 |
1.4%
|
| 2 | 12 years old | 223 |
9.8%
|
| 3 | 13 years old | 461 |
20.3%
|
| 4 | 14 years old | 589 |
26%
|
| 5 | 15 years old | 569 |
25.1%
|
| 6 | 16 years old or older | 394 |
17.4%
|
| Sysmiss | 17 |