| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 30 |
1.9%
|
| 2 | 12 years old | 56 |
3.6%
|
| 3 | 13 years old | 279 |
18%
|
| 4 | 14 years old | 483 |
31.1%
|
| 5 | 15 years old | 475 |
30.6%
|
| 6 | 16 years old | 214 |
13.8%
|
| 7 | 17 years old or older | 15 |
1%
|
| Sysmiss | 45 |