| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 87 |
3.8%
|
| 2 | 12 years old | 222 |
9.8%
|
| 3 | 13 years old | 339 |
14.9%
|
| 4 | 14 years old | 481 |
21.2%
|
| 5 | 15 years old | 419 |
18.5%
|
| 6 | 16 years old | 379 |
16.7%
|
| 7 | 17 years old or older | 342 |
15.1%
|
| Sysmiss | 17 |