| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 94 |
3.8%
|
| 2 | 12 years old | 150 |
6%
|
| 3 | 13 years old | 406 |
16.2%
|
| 4 | 14 years old | 660 |
26.4%
|
| 5 | 15 years old | 627 |
25.1%
|
| 6 | 16 years old | 384 |
15.4%
|
| 7 | 17 years old or older | 180 |
7.2%
|
| Sysmiss | 57 |