| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 46 |
2.9%
|
| 2 | 12 years old | 82 |
5.1%
|
| 3 | 13 years old | 249 |
15.5%
|
| 4 | 14 years old | 308 |
19.2%
|
| 5 | 15 years old | 408 |
25.4%
|
| 6 | 16 years old | 347 |
21.6%
|
| 7 | 17 years old or older | 164 |
10.2%
|
| Sysmiss | 15 |