| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 93 |
5%
|
| 2 | 12 years old | 252 |
13.6%
|
| 3 | 13 years old | 520 |
28.1%
|
| 4 | 14 years old | 506 |
27.4%
|
| 5 | 15 years old | 329 |
17.8%
|
| 6 | 16 years old | 118 |
6.4%
|
| 7 | 17 years old and older | 32 |
1.7%
|
| Sysmiss | 50 |