| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 94 |
2.3%
|
| 2 | 12 years old | 329 |
8.2%
|
| 3 | 13 years old | 893 |
22.2%
|
| 4 | 14 years old | 1188 |
29.6%
|
| 5 | 15 years old | 982 |
24.4%
|
| 6 | 16 years old | 351 |
8.7%
|
| 7 | 17 years old or older | 180 |
4.5%
|
| Sysmiss | 44 |