| Value | Category | Cases | |
|---|---|---|---|
| -9 | don't know | 0 |
0%
|
| -8 | does not apply | 0 |
0%
|
| -7 | refused to answer | 0 |
0%
|
| 0 | none | 4019 |
97.5%
|
| 1 | 88 |
2.1%
|
|
| 2 | 8 |
0.2%
|
|
| 3 | 3 |
0.1%
|
|
| 10 | 2 |
0%
|
|
| 20 | 1 |
0%
|
|
| 99 | more than 99 | 0 |
0%
|