| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 54 |
1.7%
|
| 2 | 12 years old | 390 |
12%
|
| 3 | 13 years old | 447 |
13.8%
|
| 4 | 14 years old | 508 |
15.7%
|
| 5 | 15 years old | 470 |
14.5%
|
| 6 | 16 years old | 616 |
19%
|
| 7 | 17 years old | 399 |
12.3%
|
| 8 | 18 years old or older | 361 |
11.1%
|
| Sysmiss | 48 |