| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 24 |
0.9%
|
| 2 | 12 years old | 16 |
0.6%
|
| 3 | 13 years old | 330 |
11.8%
|
| 4 | 14 years old | 540 |
19.3%
|
| 5 | 15 years old | 610 |
21.8%
|
| 6 | 16 years old | 561 |
20%
|
| 7 | 17 years old | 466 |
16.6%
|
| 8 | 18 years old or older | 254 |
9.1%
|
| Sysmiss | 50 |