| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 100 |
5.5%
|
| 2 | 12 years old | 254 |
14%
|
| 3 | 13 years old | 421 |
23.2%
|
| 4 | 14 years old | 333 |
18.4%
|
| 5 | 15 years old | 420 |
23.2%
|
| 6 | 16 years old | 192 |
10.6%
|
| 7 | 17 years old or older | 94 |
5.2%
|
| Sysmiss | 36 |