| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 82 |
4.4%
|
| 2 | 12 years old | 43 |
2.3%
|
| 3 | 13 years old | 183 |
9.7%
|
| 4 | 14 years old | 458 |
24.3%
|
| 5 | 15 years old | 458 |
24.3%
|
| 6 | 16 years old | 403 |
21.4%
|
| 7 | 17 years old or older | 257 |
13.6%
|
| Sysmiss | 78 |