| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 32 |
2.6%
|
| 2 | 12 years old | 125 |
10%
|
| 3 | 13 years old | 217 |
17.3%
|
| 4 | 14 years old | 334 |
26.6%
|
| 5 | 15 years old | 265 |
21.1%
|
| 6 | 16 years old | 184 |
14.7%
|
| 7 | 17 years old or older | 97 |
7.7%
|
| Sysmiss | 57 |