| Value | Category | Cases | |
|---|---|---|---|
| -2 | Refusal to answer | 0 |
0%
|
| -1 | Don't know | 0 |
0%
|
| 0 | 2624 |
99.8%
|
|
| 3 | 1 |
0%
|
|
| 10 | 1 |
0%
|
|
| 20 | 1 |
0%
|
|
| 21 | 1 |
0%
|
|
| 160 | 1 |
0%
|
|
| Sysmiss | 4 |