| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 33 |
1.9%
|
| 2 | 12 years old | 235 |
13.3%
|
| 3 | 13 years old | 429 |
24.3%
|
| 4 | 14 years old | 467 |
26.5%
|
| 5 | 15 years old | 355 |
20.1%
|
| 6 | 16 years old or older | 244 |
13.8%
|
| Sysmiss | 16 |