| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 21 |
1.3%
|
| 2 | 12 years old | 12 |
0.8%
|
| 3 | 13 years old | 203 |
12.7%
|
| 4 | 14 years old | 510 |
31.9%
|
| 5 | 15 years old | 479 |
29.9%
|
| 6 | 16 years old or older | 375 |
23.4%
|
| Sysmiss | 23 |