| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 76 |
4.6%
|
| 2 | 12 years old | 164 |
10%
|
| 3 | 13 years old | 257 |
15.7%
|
| 4 | 14 years old | 420 |
25.7%
|
| 5 | 15 years old | 391 |
23.9%
|
| 6 | 16 years old | 235 |
14.4%
|
| 7 | 17 years old or older | 92 |
5.6%
|
| Sysmiss | 102 |