| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 15 |
0.6%
|
| 2 | 12 years old | 140 |
5.5%
|
| 3 | 13 years old | 482 |
18.9%
|
| 4 | 14 years old | 546 |
21.4%
|
| 5 | 15 years old | 491 |
19.2%
|
| 6 | 16 years old or older | 879 |
34.4%
|
| Sysmiss | 10 |