| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1 |
10%
|
|
| 3 | 1 |
10%
|
|
| 4 | 1 |
10%
|
|
| 5 | 1 |
10%
|
|
| 6 | 1 |
10%
|
|
| 20 | 1 |
10%
|
|
| 77 | Don't know | 4 |
40%
|
| Sysmiss | 2097 |