| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 91 |
3.7%
|
| 2 | 12 years old | 94 |
3.8%
|
| 3 | 13 years old | 439 |
17.8%
|
| 4 | 14 years old | 603 |
24.4%
|
| 5 | 15 years old | 675 |
27.4%
|
| 6 | 16 years old | 434 |
17.6%
|
| 7 | 17 years old or older | 131 |
5.3%
|
| Sysmiss | 80 |