| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 17 |
0.7%
|
| 2 | 12 years old | 244 |
9.4%
|
| 3 | 13 years old | 894 |
34.4%
|
| 4 | 14 years old | 844 |
32.4%
|
| 5 | 15 years old | 522 |
20.1%
|
| 6 | 16 years old or older | 81 |
3.1%
|
| Sysmiss | 9 |