| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 28 |
1%
|
| 2 | 12 years old | 86 |
3.1%
|
| 3 | 13 years old | 368 |
13.2%
|
| 4 | 14 years old | 491 |
17.7%
|
| 5 | 15 years old | 505 |
18.2%
|
| 6 | 16 years old | 434 |
15.6%
|
| 7 | 17 years old | 548 |
19.7%
|
| 8 | 18 years old or older | 320 |
11.5%
|
| Sysmiss | 18 |