| Value | Category | Cases | |
|---|---|---|---|
| 1 | Much higher | 895 |
4.2%
|
| 2 | Higher | 3579 |
16.9%
|
| 3 | More or less the same | 5893 |
27.8%
|
| 4 | Lower | 6964 |
32.8%
|
| 5 | Much Lower | 3555 |
16.8%
|
| 9 | Unspecified | 332 |
1.6%
|