| Value | Category | Cases | |
|---|---|---|---|
| -9 | do not know | 21 |
14.2%
|
| 1 | none | 6 |
4.1%
|
| 2 | one | 1 |
0.7%
|
| 3 | 2-5 | 18 |
12.2%
|
| 4 | more than 5 | 102 |
68.9%
|