| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 158 |
11.3%
|
| 2 | 12 years old | 189 |
13.5%
|
| 3 | 13 years old | 283 |
20.3%
|
| 4 | 14 years old | 303 |
21.7%
|
| 5 | 15 years old | 268 |
19.2%
|
| 6 | 16 years old | 143 |
10.2%
|
| 7 | 17 years old or older | 52 |
3.7%
|
| Sysmiss | 73 |