| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 158 |
9.8%
|
| 2 | 12 years old | 152 |
9.4%
|
| 3 | 13 years old | 234 |
14.5%
|
| 4 | 14 years old | 399 |
24.7%
|
| 5 | 15 years old | 337 |
20.9%
|
| 6 | 16 years old | 240 |
14.9%
|
| 7 | 17 years old or older | 96 |
5.9%
|
| Sysmiss | 143 |