| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Very easy | 106 |
8.9%
|
| 2 | Easy | 183 |
15.4%
|
| 3 | Difficult | 530 |
44.5%
|
| 4 | Very difficult | 302 |
25.4%
|
| 7 | Don't have to pay taxes | 19 |
1.6%
|
| 9 | Don't know | 50 |
4.2%
|
| 998 | Refused | 0 |
0%
|