| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 82 |
5.5%
|
| 2 | 12 years old | 98 |
6.6%
|
| 3 | 13 years old | 302 |
20.3%
|
| 4 | 14 years old | 379 |
25.5%
|
| 5 | 15 years old | 370 |
24.8%
|
| 6 | 16 years old | 178 |
12%
|
| 7 | 17 years old or older | 80 |
5.4%
|
| Sysmiss | 6 |