| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 92 |
2.7%
|
| 2 | 12 years old | 237 |
7.1%
|
| 3 | 13 years old | 533 |
15.9%
|
| 4 | 14 years old | 731 |
21.8%
|
| 5 | 15 years old | 700 |
20.9%
|
| 6 | 16 years old | 611 |
18.3%
|
| 7 | 17 years old or older | 442 |
13.2%
|
| Sysmiss | 31 |