| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 49 |
2.6%
|
| 2 | 12 years old | 223 |
11.6%
|
| 3 | 13 years old | 337 |
17.6%
|
| 4 | 14 years old | 432 |
22.5%
|
| 5 | 15 years old | 466 |
24.3%
|
| 6 | 16 years old | 250 |
13%
|
| 7 | 17 years old or older | 161 |
8.4%
|
| Sysmiss | 3 |