| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 52 |
2.9%
|
| 2 | 12 years old | 190 |
10.5%
|
| 3 | 13 years old | 308 |
17%
|
| 4 | 14 years old | 374 |
20.7%
|
| 5 | 15 years old | 363 |
20%
|
| 6 | 16 years old | 351 |
19.4%
|
| 7 | 17 years old or older | 173 |
9.6%
|
| Sysmiss | 12 |