| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 97 |
4.8%
|
| 2 | 12 years old | 528 |
26.2%
|
| 3 | 13 years old | 558 |
27.7%
|
| 4 | 14 years old | 601 |
29.8%
|
| 5 | 15 years old | 175 |
8.7%
|
| 6 | 16 years old | 41 |
2%
|
| 7 | 17 years old or older | 15 |
0.7%
|
| Sysmiss | 84 |