| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 24 |
0.7%
|
| 2 | 12 years old | 419 |
12.4%
|
| 3 | 13 years old | 778 |
23.1%
|
| 4 | 14 years old | 637 |
18.9%
|
| 5 | 15 years old | 562 |
16.7%
|
| 6 | 16 years old | 448 |
13.3%
|
| 7 | 17 years old | 406 |
12%
|
| 8 | 18 years old or older | 100 |
3%
|
| Sysmiss | 12 |