| Value | Category | Cases | |
|---|---|---|---|
| -9 | do not know | 0 |
0%
|
| 1 | export processing zone | 0 |
0%
|
| 2 | other industrial zone | 0 |
0%
|
| 3 | neither of the above | 11 |
100%
|
| Sysmiss | 137 |