| Value | Category | Cases | |
|---|---|---|---|
| 1 | Open | 8437 |
52.6%
|
| 2 | Wood | 5134 |
32%
|
| 3 | Cement | 1537 |
9.6%
|
| 4 | Tin and iron | 203 |
1.3%
|
| 5 | Others | 738 |
4.6%
|
| 9 | 230 | ||
| Sysmiss | 9926 |