| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 78 |
3.9%
|
| 2 | 12 years old | 183 |
9.1%
|
| 3 | 13 years old | 523 |
26.1%
|
| 4 | 14 years old | 549 |
27.4%
|
| 5 | 15 years old | 391 |
19.5%
|
| 6 | 16 years old | 173 |
8.6%
|
| 7 | 17 years old or older | 104 |
5.2%
|
| Sysmiss | 12 |