| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 4 |
0.2%
|
| 2 | 12 years old | 195 |
9.6%
|
| 3 | 13 years old | 419 |
20.7%
|
| 4 | 14 years old | 474 |
23.4%
|
| 5 | 15 years old | 474 |
23.4%
|
| 6 | 16 years old or older | 460 |
22.7%
|
| Sysmiss | 11 |