| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 31 |
1.8%
|
| 2 | 12 years old | 39 |
2.3%
|
| 3 | 13 years old | 110 |
6.4%
|
| 4 | 14 years old | 315 |
18.4%
|
| 5 | 15 years old | 498 |
29.1%
|
| 6 | 16 years old or older | 718 |
42%
|
| Sysmiss | 66 |