| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 90 |
4.6%
|
| 2 | 12 years old | 172 |
8.9%
|
| 3 | 13 years old | 635 |
32.8%
|
| 4 | 14 years old | 506 |
26.1%
|
| 5 | 15 years old | 426 |
22%
|
| 6 | 16 years old | 74 |
3.8%
|
| 7 | 17 years old or older | 33 |
1.7%
|
| Sysmiss | 23 |