| Value | Category | Cases | |
|---|---|---|---|
| 0 | 1830 |
74.3%
|
|
| 1 | 74 |
3%
|
|
| 2 | 38 |
1.5%
|
|
| 3 | 19 |
0.8%
|
|
| 4 | 14 |
0.6%
|
|
| 5 | 21 |
0.9%
|
|
| 6 | 23 |
0.9%
|
|
| 7 | 218 |
8.9%
|
|
| 66 | Don't work in closed area | 181 |
7.4%
|
| 77 | Don't know | 44 |
1.8%
|