| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 6 |
0.3%
|
| 2 | 12 years old | 288 |
15.5%
|
| 3 | 13 years old | 541 |
29.2%
|
| 4 | 14 years old | 553 |
29.8%
|
| 5 | 15 years old | 361 |
19.5%
|
| 6 | 16 years old or older | 105 |
5.7%
|
| Sysmiss | 3 |