| Value | Category | Cases | |
|---|---|---|---|
| 0 | 4 |
3.3%
|
|
| 2 | 27 |
22.1%
|
|
| 3 | 36 |
29.5%
|
|
| 4 | 55 |
45.1%
|
|
| Sysmiss | 9 |