| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 11 |
0.8%
|
| 2 | 12 years old | 159 |
12.1%
|
| 3 | 13 years old | 414 |
31.6%
|
| 4 | 14 years old | 385 |
29.4%
|
| 5 | 15 years old | 230 |
17.6%
|
| 6 | 16 years old or older | 110 |
8.4%
|
| Sysmiss | 24 |