| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 199 |
5.5%
|
| 2 | 12 years old | 353 |
9.8%
|
| 3 | 13 years old | 494 |
13.7%
|
| 4 | 14 years old | 751 |
20.9%
|
| 5 | 15 years old | 675 |
18.8%
|
| 6 | 16 years old | 651 |
18.1%
|
| 7 | 17 years old or older | 475 |
13.2%
|
| Sysmiss | 21 |