| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 82 |
4.3%
|
| 2 | 12 years old | 96 |
5%
|
| 3 | 13 years old | 175 |
9.1%
|
| 4 | 14 years old | 218 |
11.3%
|
| 5 | 15 years old | 359 |
18.6%
|
| 6 | 16 years old | 470 |
24.4%
|
| 7 | 17 years old or older | 527 |
27.3%
|
| Sysmiss | 84 |