| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 16 |
0.4%
|
| 2 | 12 years old | 988 |
24.4%
|
| 3 | 13 years old | 1452 |
35.9%
|
| 4 | 14 years old | 1333 |
32.9%
|
| 5 | 15 years old | 255 |
6.3%
|
| 6 | 16 years old | 5 |
0.1%
|
| 7 | 17 years old or older | 1 |
0%
|
| Sysmiss | 15 |