| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Very easy | 81 |
3.4%
|
| 2 | Easy | 394 |
16.4%
|
| 3 | Difficult | 940 |
39.2%
|
| 4 | Very difficult | 590 |
24.6%
|
| 7 | Don't have to pay taxes | 42 |
1.8%
|
| 9 | Don't know | 353 |
14.7%
|
| 998 | Refused | 0 |
0%
|