| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 58 |
3%
|
| 2 | 12 years old | 381 |
19.5%
|
| 3 | 13 years old | 501 |
25.7%
|
| 4 | 14 years old | 487 |
25%
|
| 5 | 15 years old | 340 |
17.4%
|
| 6 | 16 years old | 122 |
6.3%
|
| 7 | 17 years old or older | 62 |
3.2%
|
| Sysmiss | 80 |