| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Very easy | 2 |
0.2%
|
| 2 | Easy | 58 |
4.8%
|
| 3 | Difficult | 556 |
46.3%
|
| 4 | Very difficult | 390 |
32.5%
|
| 7 | Don't have to pay taxes | 99 |
8.3%
|
| 9 | Don't know | 95 |
7.9%
|
| 998 | Refused | 0 |
0%
|