| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 82 |
7.4%
|
| 2 | 12 years old | 148 |
13.4%
|
| 3 | 13 years old | 247 |
22.3%
|
| 4 | 14 years old | 259 |
23.4%
|
| 5 | 15 years old | 198 |
17.9%
|
| 6 | 16 years old or older | 172 |
15.6%
|
| Sysmiss | 13 |