| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 8 |
0.4%
|
| 2 | 12 years old | 45 |
2.4%
|
| 3 | 13 years old | 350 |
18.6%
|
| 4 | 14 years old | 665 |
35.3%
|
| 5 | 15 years old | 555 |
29.4%
|
| 6 | 16 years old or older | 263 |
13.9%
|
| Sysmiss | 29 |