| Value | Category | Cases | |
|---|---|---|---|
| 1 | according to the amount used | 1322 |
65.6%
|
| 2 | fixed price | 59 |
2.9%
|
| 3 | according to the number of family members | 577 |
28.6%
|
| 4 | according to the size of house/flat | 8 |
0.4%
|
| 5 | other | 0 |
0%
|
| 9 | don't know | 48 |
2.4%
|
| Sysmiss | 3543 |