| Value | Category | Cases | |
|---|---|---|---|
| 0 | 3 |
30%
|
|
| 1 | 2 |
20%
|
|
| 2 | 1 |
10%
|
|
| 9 | 1 |
10%
|
|
| 13 | 1 |
10%
|
|
| 18 | 1 |
10%
|
|
| 19 | 1 |
10%
|
|
| Sysmiss | 14 |