| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 20 |
4%
|
| 2 | 12 years old | 19 |
3.8%
|
| 3 | 13 years old | 173 |
34.5%
|
| 4 | 14 years old | 126 |
25.1%
|
| 5 | 15 years old | 94 |
18.8%
|
| 6 | 16 years old | 31 |
6.2%
|
| 7 | 17 years old or older | 38 |
7.6%
|
| Sysmiss | 41 |