| Value | Category | Cases | |
|---|---|---|---|
| 20 | 2347 |
100%
|
|
| 40 | 1 |
0%
|
|
| 77 | Refuse to answer | 0 |
0%
|
| 99 | Do not know | 0 |
0%
|
| Sysmiss | 3872 |