| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 80 |
4%
|
| 2 | 12 years old | 338 |
16.9%
|
| 3 | 13 years old | 513 |
25.7%
|
| 4 | 14 years old | 512 |
25.6%
|
| 5 | 15 years old | 319 |
16%
|
| 6 | 16 years old | 145 |
7.3%
|
| 7 | 17 years old or older | 90 |
4.5%
|
| Sysmiss | 71 |