| Value | Category | Cases | |
|---|---|---|---|
| 0 | 15 |
13.3%
|
|
| 1 | 40 |
35.4%
|
|
| 2 | 32 |
28.3%
|
|
| 3 | 18 |
15.9%
|
|
| 4 | 5 |
4.4%
|
|
| 5 | 3 |
2.7%
|
|
| Sysmiss | 18 |