| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 15 |
1.4%
|
| 2 | 12 years old | 46 |
4.4%
|
| 3 | 13 years old | 177 |
17.1%
|
| 4 | 14 years old | 284 |
27.4%
|
| 5 | 15 years old | 310 |
30%
|
| 6 | 16 years old | 135 |
13%
|
| 7 | 17 years old or older | 68 |
6.6%
|
| Sysmiss | 13 |