| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 32 |
2.1%
|
| 2 | 12 years old | 208 |
13.8%
|
| 3 | 13 years old | 333 |
22.1%
|
| 4 | 14 years old | 392 |
26%
|
| 5 | 15 years old | 291 |
19.3%
|
| 6 | 16 years old | 164 |
10.9%
|
| 7 | 17 years old or older | 87 |
5.8%
|
| Sysmiss | 348 |