| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 12 |
0.9%
|
| 2 | 12 years old | 79 |
6%
|
| 3 | 13 years old | 307 |
23.3%
|
| 4 | 14 years old | 355 |
26.9%
|
| 5 | 15 years old | 344 |
26.1%
|
| 6 | 16 years old | 155 |
11.7%
|
| 7 | 17 years old or older | 68 |
5.2%
|
| Sysmiss | 12 |