| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 368 |
10.2%
|
| 2 | 12 years old | 467 |
13%
|
| 3 | 13 years old | 412 |
11.4%
|
| 4 | 14 years old | 559 |
15.5%
|
| 5 | 15 years old | 673 |
18.7%
|
| 6 | 16 years old | 584 |
16.2%
|
| 7 | 17 years old or older | 541 |
15%
|
| Sysmiss | 481 |