| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 6 |
0.4%
|
| 2 | 12 years old | 52 |
3.3%
|
| 3 | 13 years old | 297 |
18.8%
|
| 4 | 14 years old | 496 |
31.4%
|
| 5 | 15 years old | 458 |
29%
|
| 6 | 16 years old or older | 271 |
17.2%
|
| Sysmiss | 49 |