| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 84 |
5.4%
|
| 2 | 12 years old | 216 |
13.8%
|
| 3 | 13 years old | 209 |
13.4%
|
| 4 | 14 years old | 231 |
14.8%
|
| 5 | 15 years old | 209 |
13.4%
|
| 6 | 16 years old | 210 |
13.4%
|
| 7 | 17 years old | 204 |
13%
|
| 8 | 18 years old or older | 202 |
12.9%
|
| Sysmiss | 9 |