| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 1 |
0.1%
|
| 1 | Very easy | 76 |
6.3%
|
| 2 | Easy | 243 |
20.3%
|
| 3 | Difficult | 354 |
29.5%
|
| 4 | Very difficult | 306 |
25.5%
|
| 7 | Don't have to pay taxes | 71 |
5.9%
|
| 9 | Don't Know | 148 |
12.3%
|
| 98 | Refused | 0 |
0%
|