| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 85 |
2.7%
|
| 2 | 12 years old | 446 |
14.3%
|
| 3 | 13 years old | 944 |
30.3%
|
| 4 | 14 years old | 945 |
30.3%
|
| 5 | 15 years old | 523 |
16.8%
|
| 6 | 16 years old | 114 |
3.7%
|
| 7 | 17 years old or older | 61 |
2%
|
| Sysmiss | 32 |