| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 52 |
2.9%
|
| 2 | 12 years old | 100 |
5.6%
|
| 3 | 13 years old | 171 |
9.7%
|
| 4 | 14 years old | 335 |
18.9%
|
| 5 | 15 years old | 406 |
22.9%
|
| 6 | 16 years old | 322 |
18.2%
|
| 7 | 17 years old or older | 384 |
21.7%
|
| Sysmiss | 65 |