| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 32 |
3%
|
| 2 | 12 years old | 57 |
5.4%
|
| 3 | 13 years old | 98 |
9.3%
|
| 4 | 14 years old | 188 |
17.8%
|
| 5 | 15 years old | 261 |
24.6%
|
| 6 | 16 years old | 229 |
21.6%
|
| 7 | 17 years old or older | 194 |
18.3%
|
| Sysmiss | 148 |