| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Very easy | 63 |
2.6%
|
| 2 | Easy | 297 |
12.4%
|
| 3 | Difficult | 1015 |
42.3%
|
| 4 | Very difficult | 745 |
31%
|
| 7 | Don't have to pay taxes | 93 |
3.9%
|
| 9 | Don't know | 187 |
7.8%
|
| 998 | Refused | 0 |
0%
|