| Value | Category | Cases | |
|---|---|---|---|
| 0 | 5 |
50%
|
|
| 2 | 1 |
10%
|
|
| 4 | 1 |
10%
|
|
| 5 | 1 |
10%
|
|
| 50 | 1 |
10%
|
|
| 77 | Don't know | 1 |
10%
|
| Sysmiss | 2097 |