| Value | Category | Cases | |
|---|---|---|---|
| 0 | 11 |
8.9%
|
|
| 2 | 42 |
34.1%
|
|
| 3 | 50 |
40.7%
|
|
| 4 | 20 |
16.3%
|
|
| Sysmiss | 8 |