| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 10 |
0%
|
| 1 | Very easy | 1269 |
2.8%
|
| 2 | Easy | 4847 |
10.6%
|
| 3 | Difficult | 17665 |
38.7%
|
| 4 | Very difficult | 13822 |
30.3%
|
| 7 | Don't have to pay taxes | 2062 |
4.5%
|
| 9 | Don't know | 5923 |
13%
|
| 997 | Not asked | 0 |
0%
|
| 998 | Refused | 0 |
0%
|
| Sysmiss | 5989 |