| Value | Category | Cases | |
|---|---|---|---|
| 1 | 18-21 | 2 |
6.1%
|
| 2 | 22-35 | 16 |
48.5%
|
| 3 | 36-59 | 13 |
39.4%
|
| 4 | over60 | 2 |
6.1%
|
| Missing value | 117 |