| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 85 |
3.6%
|
| 2 | 12 years old | 157 |
6.7%
|
| 3 | 13 years old | 377 |
16%
|
| 4 | 14 years old | 633 |
26.9%
|
| 5 | 15 years old | 581 |
24.7%
|
| 6 | 16 years old | 336 |
14.3%
|
| 7 | 17 years old or older | 187 |
7.9%
|
| Sysmiss | 48 |