| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 27 |
1%
|
| 2 | 12 years old | 233 |
8.5%
|
| 3 | 13 years old | 326 |
11.8%
|
| 4 | 14 years old | 468 |
17%
|
| 5 | 15 years old | 471 |
17.1%
|
| 6 | 16 years old | 353 |
12.8%
|
| 7 | 17 years old | 356 |
12.9%
|
| 8 | 18 years old or older | 521 |
18.9%
|
| Sysmiss | 10 |