| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 44 |
2.1%
|
| 2 | 12 years old | 73 |
3.5%
|
| 3 | 13 years old | 71 |
3.4%
|
| 4 | 14 years old | 510 |
24.3%
|
| 5 | 15 years old | 755 |
35.9%
|
| 6 | 16 years old | 528 |
25.1%
|
| 7 | 17 years old or older | 120 |
5.7%
|
| Sysmiss | 62 |