| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very Easy | 66 |
2.8%
|
| 2 | Easy | 403 |
16.8%
|
| 3 | Difficult | 818 |
34.1%
|
| 4 | Very Difficult | 469 |
19.5%
|
| 7 | Don’t have to pay taxes | 154 |
6.4%
|
| 9 | Don’t know | 489 |
20.4%
|