| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 97 |
6%
|
| 2 | 12 years old | 168 |
10.4%
|
| 3 | 13 years old | 494 |
30.5%
|
| 4 | 14 years old | 460 |
28.4%
|
| 5 | 15 years old | 300 |
18.5%
|
| 6 | 16 years old | 77 |
4.8%
|
| 7 | 17 years old or older | 24 |
1.5%
|
| Sysmiss | 59 |