| Value | Category | Cases | |
|---|---|---|---|
| 1 | Mud | 70744 |
60.2%
|
| 2 | Wood, bamboo, reed | 9498 |
8.1%
|
| 3 | Brick, cement, stone | 34372 |
29.2%
|
| 9 | Others | 2990 |
2.5%
|