| Value | Category | Cases | |
|---|---|---|---|
| 1 | Impossible | 28 |
15.9%
|
| 2 | Very difficult | 22 |
12.5%
|
| 3 | Difficult, but always feasible | 21 |
11.9%
|
| 4 | Not difficult | 57 |
32.4%
|
| 5 | No scarcity of fertile land | 48 |
27.3%
|
| Sysmiss | 8 |