| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 106 |
5.5%
|
| 2 | 12 years old | 173 |
9%
|
| 3 | 13 years old | 332 |
17.2%
|
| 4 | 14 years old | 330 |
17.1%
|
| 5 | 15 years old | 501 |
25.9%
|
| 6 | 16 years old | 312 |
16.1%
|
| 7 | 17 years old or older | 178 |
9.2%
|
| Sysmiss | 43 |