| Value | Category | Cases | |
|---|---|---|---|
| 0 | 13 |
65%
|
|
| 2 | 2 |
10%
|
|
| 3 | 1 |
5%
|
|
| 4 | 2 |
10%
|
|
| 7 | 1 |
5%
|
|
| 20 | 1 |
5%
|
|
| Sysmiss | 1931 |