| Value | Category | Cases | |
|---|---|---|---|
| -9 | do not know | 2 |
2.7%
|
| 1 | export processing zone | 9 |
12.2%
|
| 2 | other industrial zone | 17 |
23%
|
| 3 | neither of the above | 46 |
62.2%
|
| Sysmiss | 167 |