| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 125 |
2.9%
|
| 2 | 12 years old | 395 |
9.2%
|
| 3 | 13 years old | 682 |
15.9%
|
| 4 | 14 years old | 897 |
21%
|
| 5 | 15 years old | 945 |
22.1%
|
| 6 | 16 years old | 776 |
18.1%
|
| 7 | 17 years old or older | 461 |
10.8%
|
| Sysmiss | 39 |