| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 33 |
5.3%
|
| 2 | 12 years old | 74 |
12%
|
| 3 | 13 years old | 118 |
19.1%
|
| 4 | 14 years old | 151 |
24.5%
|
| 5 | 15 years old | 84 |
13.6%
|
| 6 | 16 years old | 51 |
8.3%
|
| 7 | 17 years old or older | 106 |
17.2%
|
| Sysmiss | 27 |