| Value | Category | Cases | |
|---|---|---|---|
| 1 | Unpaved roads | 24 |
1.4%
|
| 2 | Queries and stone cutting | 20 |
1.2%
|
| 3 | Construction | 87 |
5.1%
|
| 4 | Industrial activities | 37 |
2.2%
|
| 5 | Other (specify) | 18 |
1.1%
|
| Sysmiss | 1523 |