| Value | Category | Cases | |
|---|---|---|---|
| 1 | Much more than usual | 42 |
3.6%
|
| 2 | More than usual | 90 |
7.6%
|
| 3 | Same as usual | 415 |
35.1%
|
| 4 | Less than usual | 260 |
22%
|
| 5 | Much less than usual | 374 |
31.6%
|
| 9 | Missing | 2 |
0.2%
|