| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 98 |
5.4%
|
| 2 | 12 years old | 287 |
15.8%
|
| 3 | 13 years old | 342 |
18.8%
|
| 4 | 14 years old | 376 |
20.6%
|
| 5 | 15 years old | 346 |
19%
|
| 6 | 16 years old | 222 |
12.2%
|
| 7 | 17 years old or older | 150 |
8.2%
|
| Sysmiss | 9 |