| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 70 |
4%
|
| 2 | 12 years old | 227 |
12.8%
|
| 3 | 13 years old | 391 |
22.1%
|
| 4 | 14 years old | 432 |
24.4%
|
| 5 | 15 years old | 360 |
20.3%
|
| 6 | 16 years old | 193 |
10.9%
|
| 7 | 17 years old or older | 97 |
5.5%
|
| Sysmiss | 25 |