| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Very easy | 84 |
3.5%
|
| 2 | Easy | 237 |
9.9%
|
| 3 | Difficult | 974 |
40.6%
|
| 4 | Very difficult | 889 |
37%
|
| 7 | Don't have to pay taxes | 104 |
4.3%
|
| 9 | Don't know | 112 |
4.7%
|
| 998 | Refused | 0 |
0%
|