| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 6 |
0.4%
|
| 2 | 12 years old | 6 |
0.4%
|
| 3 | 13 years old | 238 |
16.7%
|
| 4 | 14 years old | 383 |
26.9%
|
| 5 | 15 years old | 391 |
27.4%
|
| 6 | 16 years old or older | 401 |
28.1%
|
| Sysmiss | 26 |