| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Very easy | 22 |
1.8%
|
| 2 | Easy | 111 |
9.3%
|
| 3 | Difficult | 474 |
39.5%
|
| 4 | Very difficult | 492 |
41%
|
| 7 | Don't have to pay taxes | 38 |
3.2%
|
| 9 | Don't know | 63 |
5.3%
|
| 998 | Refused | 0 |
0%
|