| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Very easy | 30 |
2.5%
|
| 2 | Easy | 105 |
8.8%
|
| 3 | Difficult | 400 |
33.4%
|
| 4 | Very difficult | 200 |
16.7%
|
| 7 | Don't have to pay taxes | 90 |
7.5%
|
| 9 | Don't know | 372 |
31.1%
|
| 998 | Refused | 0 |
0%
|