| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 263 |
16.2%
|
| 2 | 12 years old | 458 |
28.2%
|
| 3 | 13 years old | 445 |
27.4%
|
| 4 | 14 years old | 233 |
14.3%
|
| 5 | 15 years old | 147 |
9%
|
| 6 | 16 years old | 55 |
3.4%
|
| 7 | 17 years old or older | 25 |
1.5%
|
| Sysmiss | 58 |