| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 5 |
0.4%
|
| 1 | Very easy | 22 |
1.8%
|
| 2 | Easy | 241 |
20.2%
|
| 3 | Difficult | 544 |
45.5%
|
| 4 | Very difficult | 167 |
14%
|
| 7 | Don't have to pay taxes | 0 |
0%
|
| 9 | Don't Know | 217 |
18.1%
|
| 98 | Refused | 0 |
0%
|