| Value | Category | Cases | |
|---|---|---|---|
| 1 | Much higher | 1285 |
6.4%
|
| 2 | Higher | 2991 |
15%
|
| 3 | More or less the same | 4716 |
23.7%
|
| 4 | Lower | 6125 |
30.7%
|
| 5 | Much lower | 4333 |
21.7%
|
| 9 | Unspecified | 490 |
2.5%
|