| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 41 |
1.1%
|
| 2 | 12 years old | 44 |
1.2%
|
| 3 | 13 years old | 587 |
16.3%
|
| 4 | 14 years old | 730 |
20.2%
|
| 5 | 15 years old | 673 |
18.7%
|
| 6 | 16 years old | 655 |
18.2%
|
| 7 | 17 years old | 650 |
18%
|
| 8 | 18 years old or older | 225 |
6.2%
|
| Sysmiss | 32 |