| Value | Category | Cases | |
|---|---|---|---|
| 1 | 12 years old | 19 |
1.3%
|
| 2 | 13 years old | 127 |
9%
|
| 3 | 14 years old | 239 |
16.9%
|
| 4 | 15 years old | 226 |
15.9%
|
| 5 | 16 years old | 237 |
16.7%
|
| 6 | 17 years old or older | 570 |
40.2%
|
| Sysmiss | 10 |