| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 87 |
2.5%
|
| 2 | 12 years old | 180 |
5.2%
|
| 3 | 13 years old | 709 |
20.6%
|
| 4 | 14 years old | 1043 |
30.3%
|
| 5 | 15 years old | 858 |
24.9%
|
| 6 | 16 years old | 494 |
14.3%
|
| 7 | 17 years old or older | 72 |
2.1%
|
| Sysmiss | 34 |