| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 47 |
2.8%
|
| 2 | 12 years old | 101 |
6.1%
|
| 3 | 13 years old | 394 |
23.7%
|
| 4 | 14 years old | 405 |
24.4%
|
| 5 | 15 years old | 375 |
22.6%
|
| 6 | 16 years old | 245 |
14.8%
|
| 7 | 17 years old or older | 92 |
5.5%
|
| Sysmiss | 39 |