| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 62 |
4.2%
|
| 2 | 12 years old | 91 |
6.1%
|
| 3 | 13 years old | 455 |
30.7%
|
| 4 | 14 years old | 442 |
29.8%
|
| 5 | 15 years old | 283 |
19.1%
|
| 6 | 16 years old | 109 |
7.4%
|
| 7 | 17 years old or older | 39 |
2.6%
|
| Sysmiss | 30 |