| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Very easy | 22 |
1.8%
|
| 2 | Easy | 91 |
7.6%
|
| 3 | Difficult | 264 |
22%
|
| 4 | Very difficult | 345 |
28.8%
|
| 7 | Don't have to pay taxes | 332 |
27.7%
|
| 9 | Don't know | 146 |
12.2%
|
| 998 | Refused | 0 |
0%
|