| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 283 |
5.2%
|
| 2 | 12 years old | 732 |
13.4%
|
| 3 | 13 years old | 1148 |
21.1%
|
| 4 | 14 years old | 1304 |
23.9%
|
| 5 | 15 years old | 975 |
17.9%
|
| 6 | 16 years old | 614 |
11.3%
|
| 7 | 17 years old or older | 395 |
7.2%
|
| Sysmiss | 296 |