| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Very easy | 28 |
2.3%
|
| 2 | Easy | 172 |
14.3%
|
| 3 | Difficult | 478 |
39.8%
|
| 4 | Very difficult | 403 |
33.6%
|
| 7 | Don't have to pay taxes | 76 |
6.3%
|
| 9 | Don't Know | 43 |
3.6%
|
| 98 | Refused | 0 |
0%
|