| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| -7 | The establishment does not use water for production | 5 |
12.2%
|
| 1 | Yes | 5 |
12.2%
|
| 2 | No | 31 |
75.6%
|
| Sysmiss | 79 |