| Value | Category | Cases | |
|---|---|---|---|
| 0 | 33 |
21.4%
|
|
| 1 | 47 |
30.5%
|
|
| 2 | 45 |
29.2%
|
|
| 3 | 25 |
16.2%
|
|
| 4 | 4 |
2.6%
|
|
| Sysmiss | 422 |