| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 433 |
10.8%
|
| 2 | 12 years old | 810 |
20.2%
|
| 3 | 13 years old | 804 |
20.1%
|
| 4 | 14 years old | 842 |
21%
|
| 5 | 15 years old | 639 |
15.9%
|
| 6 | 16 years old | 313 |
7.8%
|
| 7 | 17 years old or older | 167 |
4.2%
|
| Sysmiss | 170 |