| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 62 |
4.7%
|
| 2 | 12 years old | 205 |
15.7%
|
| 3 | 13 years old | 277 |
21.2%
|
| 4 | 14 years old | 364 |
27.9%
|
| 5 | 15 years old | 301 |
23%
|
| 6 | 16 years old | 82 |
6.3%
|
| 7 | 17 years old or older | 15 |
1.1%
|
| Sysmiss | 15 |