| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 348 |
9.3%
|
| 2 | 12 years old | 700 |
18.7%
|
| 3 | 13 years old | 759 |
20.2%
|
| 4 | 14 years old | 680 |
18.1%
|
| 5 | 15 years old | 776 |
20.7%
|
| 6 | 16 years old | 423 |
11.3%
|
| 7 | 17 years old or older | 67 |
1.8%
|
| Sysmiss | 39 |