| Value | Category | Cases | |
|---|---|---|---|
| -9 | do not know | 9 |
3.7%
|
| 0 | 227 |
94.2%
|
|
| 5 | 1 |
0.4%
|
|
| 50 | 1 |
0.4%
|
|
| 60 | 1 |
0.4%
|
|
| 80 | 1 |
0.4%
|
|
| 100 | 1 |
0.4%
|