| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 47 |
4.8%
|
| 2 | 12 years old | 70 |
7.2%
|
| 3 | 13 years old | 151 |
15.4%
|
| 4 | 14 years old | 343 |
35%
|
| 5 | 15 years old | 181 |
18.5%
|
| 6 | 16 years old | 127 |
13%
|
| 7 | 17 years old or older | 60 |
6.1%
|
| Sysmiss | 32 |