| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 15 |
1%
|
| 2 | 12 years old | 11 |
0.7%
|
| 3 | 13 years old | 152 |
9.7%
|
| 4 | 14 years old | 367 |
23.3%
|
| 5 | 15 years old | 470 |
29.9%
|
| 6 | 16 years old or older | 557 |
35.4%
|
| Sysmiss | 34 |