| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 52 |
2.7%
|
| 2 | 12 years old | 383 |
20.1%
|
| 3 | 13 years old | 516 |
27%
|
| 4 | 14 years old | 552 |
28.9%
|
| 5 | 15 years old | 294 |
15.4%
|
| 6 | 16 years old | 82 |
4.3%
|
| 7 | 17 years old or older | 29 |
1.5%
|
| Sysmiss | 59 |