| Value | Category | Cases | |
|---|---|---|---|
| 1 | 18-21 | 9 |
11.8%
|
| 2 | 22-35 | 34 |
44.7%
|
| 3 | 36-59 | 31 |
40.8%
|
| 4 | over60 | 2 |
2.6%
|
| Missing value | 71 |