| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 159 |
5.1%
|
| 2 | 12 years old | 221 |
7.1%
|
| 3 | 13 years old | 638 |
20.4%
|
| 4 | 14 years old | 885 |
28.2%
|
| 5 | 15 years old | 706 |
22.5%
|
| 6 | 16 years old | 367 |
11.7%
|
| 7 | 17 years old or older | 158 |
5%
|
| Sysmiss | 106 |