| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 50 |
2.1%
|
| 2 | 12 years old | 84 |
3.5%
|
| 3 | 13 years old | 513 |
21.3%
|
| 4 | 14 years old | 981 |
40.8%
|
| 5 | 15 years old | 622 |
25.9%
|
| 6 | 16 years old or older | 155 |
6.4%
|
| Sysmiss | 13 |