| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 79 |
3%
|
| 2 | 12 years old | 253 |
9.7%
|
| 3 | 13 years old | 551 |
21.1%
|
| 4 | 14 years old | 774 |
29.6%
|
| 5 | 15 years old | 633 |
24.2%
|
| 6 | 16 years old | 255 |
9.7%
|
| 7 | 17 years old or older | 71 |
2.7%
|
| Sysmiss | 20 |