| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 33 |
2.6%
|
| 2 | 12 years old | 125 |
9.9%
|
| 3 | 13 years old | 260 |
20.6%
|
| 4 | 14 years old | 335 |
26.6%
|
| 5 | 15 years old | 263 |
20.9%
|
| 6 | 16 years old | 204 |
16.2%
|
| 7 | 17 years old or older | 41 |
3.3%
|
| Sysmiss | 102 |