| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 188 |
13.1%
|
| 2 | 12 years old | 224 |
15.6%
|
| 3 | 13 years old | 316 |
22%
|
| 4 | 14 years old | 350 |
24.4%
|
| 5 | 15 years old | 218 |
15.2%
|
| 6 | 16 years old | 93 |
6.5%
|
| 7 | 17 years old or older | 45 |
3.1%
|
| Sysmiss | 69 |