| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 1 |
0.1%
|
| 1 | Very easy | 14 |
1.2%
|
| 2 | Easy | 190 |
15.8%
|
| 3 | Difficult | 553 |
46.1%
|
| 4 | Very difficult | 208 |
17.3%
|
| 7 | Don't have to pay taxes | 16 |
1.3%
|
| 9 | Don't Know | 218 |
18.2%
|
| 98 | Refused | 0 |
0%
|