| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 23 |
0.8%
|
| 2 | 12 years old | 402 |
14.2%
|
| 3 | 13 years old | 695 |
24.5%
|
| 4 | 14 years old | 840 |
29.6%
|
| 5 | 15 years old | 612 |
21.6%
|
| 6 | 16 years old or older | 264 |
9.3%
|
| Sysmiss | 34 |