| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 27 |
1.6%
|
| 2 | 12 years old | 69 |
4%
|
| 3 | 13 years old | 405 |
23.4%
|
| 4 | 14 years old | 621 |
35.9%
|
| 5 | 15 years old | 456 |
26.4%
|
| 6 | 16 years old | 103 |
6%
|
| 7 | 17 years old or older | 49 |
2.8%
|
| Sysmiss | 37 |