| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 107 |
4.4%
|
| 2 | 12 years old | 144 |
6%
|
| 3 | 13 years old | 420 |
17.4%
|
| 4 | 14 years old | 698 |
28.9%
|
| 5 | 15 years old | 492 |
20.4%
|
| 6 | 16 years old | 393 |
16.3%
|
| 7 | 17 years old or older | 162 |
6.7%
|
| Sysmiss | 42 |