| Value | Category | Cases | |
|---|---|---|---|
| 0 | 20 |
16.5%
|
|
| 2 | 53 |
43.8%
|
|
| 3 | 36 |
29.8%
|
|
| 4 | 12 |
9.9%
|
|
| Sysmiss | 10 |